**Status of International Intercomparisons Involving EEEL**

**As of January 1, 2005**

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| DC       | 1 Ω     |        | CCE-86,    | Only 1Ω     | PTB, VSL,  |
| re       |         |        | October    | exchanged   | BIPM,      |
| sistance |         |        | 1987       |             | CSIRO,     |
|          |         |        |            | QHE, PTB    | ETL, IMM,  |
|          |         |        |            | i=2, NIST   | LCIE, NIM. |
|          |         |        |            | i=4,        | NPL, NRC,  |
|          |         |        |            | Published   | OFM        |
|          |         |        |            | report:     |            |
|          |         |        |            | BIPM 88/6   |            |
+----------+---------+--------+------------+-------------+------------+
| DC       | 100 Ω   | 23.00  | Euromet    | Chara       | PTB        |
| Re       |         | EC,    | Proj. #435 | cterization | (Pilot),   |
| sistance |         |        |            | of the      | IEN, JV,   |
|          |         | 5 mA   | Began      | transport   | NPL, NRC,  |
|          |         |        | 2/98; End  | behavior of | OFM, SP,   |
|          |         |        | 12/99      | c           | VTT, NIST, |
|          |         |        |            | ommercially | LCIE, CEM, |
|          |         |        |            | available   | CSIT-NML,  |
|          |         |        |            | 100 Ohm     | UME        |
|          |         |        |            | standard    |            |
|          |         |        |            | resistors   |            |
+----------+---------+--------+------------+-------------+------------+
| DC       | 100 Ω   |        | CCEM-K10   | PTB         | PTB        |
| Re       |         |        |            | (Pilot) -   | (Pilot),   |
| sistance |         |        | Began 8/01 | NIST        | BIPM, CEM, |
|          |         |        |            | m           | CSIR-NML,  |
|          |         |        |            | easurements | CSIRO-NML, |
|          |         |        |            | completed   | METAS,     |
|          |         |        |            | 9/01        | MIKES,     |
|          |         |        |            |             | NIM, NIST, |
|          |         |        |            |             | NMIJ, NRC, |
|          |         |        |            |             | SMU        |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| DC       | 1 Ω; 10 |        | CCE-88,    | Metrologia, | ASMW, BIPM |
| re       | kΩ      |        | October    | 29,         | (Pilot),   |
| sistance |         |        | 1990       | 273-283,    | CSIRO,     |
|          |         |        |            | 1992        | ETL, IEN,  |
|          |         |        | Became     |             | IMM, LCIE, |
|          |         |        | CCEM-K1    | (Rand       | LNETI,     |
|          |         |        |            | Elmquist    | NIM, NMS,  |
|          |         |        | Ended in   | has copy of | NPL, NRC,  |
|          |         |        | 1991       | results)    | OFM, PTB,  |
|          |         |        |            |             | SP, VSL,   |
|          |         |        |            |             | VTT        |
+----------+---------+--------+------------+-------------+------------+
| DC       | 1 Ω;    |        | Bilateral  | Completed   | VSL        |
| Re       | 100 Ω   |        | with NML   | 1995        |            |
| sistance |         |        |            |             |            |
|          |         |        | Aug - Oct  |             |            |
|          |         |        | 1995       |             |            |
+----------+---------+--------+------------+-------------+------------+
| DC       | 100 Ω   |        | CCEM-K10   | Completed   | PTB        |
| Re       |         |        |            |             | (Pilot),   |
| sistance |         |        |            |             | NIST,      |
|          |         |        |            |             | BIPM, CEM, |
|          |         |        |            |             | CSIRO-NML, |
|          |         |        |            |             | CSIR-NML,  |
|          |         |        |            |             | METAS,     |
|          |         |        |            |             | MIKES,     |
|          |         |        |            |             | NIM, NMIJ, |
|          |         |        |            |             | NRC, SMU   |
+----------+---------+--------+------------+-------------+------------+
| DC       | At 10   |        | CCEM-K2    | NIST        | NRC, LCIE, |
| Re       | MΩ and  |        |            | (Pilot) -   | NPL, PTB,  |
| sistance |         |        | Began 6/96 | through     | N          |
|          | 1 GΩ    |        |            | CCEM.       | ML(Austr), |
|          |         |        | End 3/99   |             | IRL,       |
|          |         |        |            | Approved    | NML(SA),   |
|          |         |        |            | for         | SP, NMi,   |
|          |         |        |            | Equivalence | OFMET,     |
|          |         |        |            |             | IEN, NIM,  |
|          |         |        |            | Final       | KRISS,     |
|          |         |        |            | Report      | VNIIM      |
|          |         |        |            | 1/2002      |            |
+----------+---------+--------+------------+-------------+------------+
| Cap      | 10 pF   | 1592   | Bilateral  | Completed   | NRC        |
| acitance |         | Hz     | with NRC   | 1989        |            |
+----------+---------+--------+------------+-------------+------------+
| Cap      | 10 pF   | 1592   | Trilateral | Completed   | VSL, PTB   |
| acitance |         | Hz     |            | 1989        |            |
|          |         |        |            |             |            |
|          |         |        |            | (U          |            |
|          |         |        |            | npublished) |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Cap      | 10 pF   | 1.6    | CCEM-K4    | NIST        | PTB, NRC,  |
| acitance |         | kHz    |            | (Pilot) -   | NPL,       |
|          |         |        | Began 6/96 | through     | N          |
|          |         |        |            | CCEM. High  | ML(Austr), |
|          |         |        | End 9/98   | priority.   | VSL,       |
|          |         |        |            |             | VNIIM,     |
|          |         |        |            | M           | MSL, NIM,  |
|          |         |        |            | easurements | BIPM, LCIE |
|          |         |        |            | complete.   |            |
|          |         |        |            | Approved    |            |
|          |         |        |            | for         |            |
|          |         |        |            | equivalence |            |
|          |         |        |            |             |            |
|          |         |        |            | Results     |            |
|          |         |        |            | Available   |            |
+----------+---------+--------+------------+-------------+------------+
| In       | 1, 10,  | 100    | Informal   | Completed   | NRC        |
| ductance | 100,    | Hz, 1  | bilateral  | 1991        |            |
|          |         | kHz    | with NRC   |             |            |
|          | 1000 mH |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| In       | 10 mH   | 1 kHz  | CCE-89-2   | NIST        | PTB        |
| ductance |         |        |            | completed   | (Pilot),   |
|          |         |        | Completed  | October,    | ASMW,      |
|          |         |        | in 1995    | 1994,       | BNM-LCIE,  |
|          |         |        |            | returned to | IEN, NIM,  |
|          |         |        | CCE        | PTB         | NPL,       |
|          |         |        | Document   |             | OFMET, SP, |
|          |         |        | 95-36      | Approved    | UME, VNIIM |
|          |         |        |            | for         |            |
|          |         |        | Became     | Equivalence |            |
|          |         |        | CCEM-K3    |             |            |
+----------+---------+--------+------------+-------------+------------+
| DC       | 10 V    |        | Winter     | BIPM,       |            |
| voltage  |         |        | 98/99      | NIST-G,     |            |
|          |         |        |            | NIST-B      |            |
+----------+---------+--------+------------+-------------+------------+
| DC       | 1.018 V | Direct | BIPM, May  | Completed   | PTB        |
| voltage  |         | comp   | 1991       |             |            |
|          |         | arison |            |             |            |
|          |         | of     |            |             |            |
|          |         | Jos    |            |             |            |
|          |         | ephson |            |             |            |
|          |         | v      |            |             |            |
|          |         | oltage |            |             |            |
|          |         | sta    |            |             |            |
|          |         | ndards |            |             |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| DC and   | Nominal | Calib  | SIM. 1.1   | NIST was    | AEROMAN    |
| AC       | ranges  | ration |            | the pilot   | CALI,      |
| Voltage  | found   | labo   | Began 1997 | lab (N.     | CENAM,     |
| and      | on five | ratory |            | Oldham and  | CONACYT,   |
| Current; | f       | cond   | Ended in   | M. Parker)  | ICAITI,    |
| DC       | unction | itions | 1999       |             | ICE, CAMET |
| Re       | pr      |        |            | Report      | INEN,      |
| sistance | ecision | Used   |            | available   | INMETRO,   |
|          | DMMs    | comm   |            | on the SIM  | INN, INTI, |
|          |         | ercial |            | website     | SURAMET    |
|          |         | DMMs   |            |             | INTN, JBS, |
|          |         |        |            |             | CARIMET    |
|          |         |        |            |             | LATU, NRC, |
|          |         |        |            |             | SIC,       |
|          |         |        |            |             | ANDIMET,   |
|          |         |        |            |             | T&TBS,     |
|          |         |        |            |             | USAC, UTP  |
+----------+---------+--------+------------+-------------+------------+
| Voltage  | 10V     | JVS    | Informal   | Completed   | None       |
|          |         |        | with CSIR  | 6/94        |            |
|          |         |        | South      |             |            |
|          |         |        | Africa     |             |            |
+----------+---------+--------+------------+-------------+------------+
| Voltage  | 10V     | JVS    | Informal   | Completed   | None       |
|          |         |        | with SCL   | 6/94        |            |
|          |         |        |            |             |            |
|          |         |        | Hong Kong  |             |            |
+----------+---------+--------+------------+-------------+------------+
|          |         | 40 Hz  |            | J. De       | VSL        |
|          |         | to 1   |            | Vreede,     | (Pilot),   |
|          |         |        |            | IEEE        | NPL        |
+----------+---------+--------+------------+-------------+------------+
| Voltage  | 1 V     | JVS    | Informal   | Completed   | None       |
|          |         |        | with       | 10/99       |            |
|          |         |        | INMETRO,   |             |            |
|          |         |        | Brazil     |             |            |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 10 V -- | MHz    | CCE        | I&M Trans.  | PTB, IEN,  |
| transfer | 1000 V  |        |            | 42, 2,      | LCIE,      |
|          |         |        |            | 99-108,     | IIRS, SMB, |
|          |         |        |            | 1993        | ETL,       |
|          |         |        |            |             | CSIRO,     |
|          |         |        |            |             | NRC, ASMW, |
|          |         |        |            |             | VNIIM      |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 3 V     | 10 Hz  | CCEM-K6.A  | NIST        | PTB        |
| transfer |         | to 1   |            | completed   | (Pilot),   |
|          |         | MHz,   | Began 1/94 | m           | AREPA,     |
|          |         |        |            | easurements | NPL, IEN,  |
|          |         | Tr     | End 96     | June 1995.  | JV, VSL,   |
|          |         | ansfer |            | Results     | LCIE, VTT, |
|          |         | sta    |            | described   | SP, OFMET, |
|          |         | ndard: |            | in paper at | BEV,       |
|          |         | MJTC   |            | CPEM \>96   | INETI,     |
|          |         |        |            |             | CEM, NRC,  |
|          |         |        |            | Approved    | NMI, NML   |
|          |         |        |            | for         | (A         |
|          |         |        |            | Equivalence | ustralia), |
|          |         |        |            |             | KRISS,     |
|          |         |        |            |             | NML(SA),   |
|          |         |        |            |             | NPL        |
|          |         |        |            |             | (India),   |
|          |         |        |            |             | CMS, INTI, |
|          |         |        |            |             | NIM, VNIIM |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 4 V     | 1- 50  | CCEM-92-5  | NIST-G and  | VSL        |
| Transfer | (VSL    | MHz    |            | NIST-B have | (Pilot),   |
|          | design) |        | Began 8/95 | completed   | PTB,       |
|          |         |        |            | m           | NML(Aust), |
|          | 3 V     |        | End 6/98   | easurements | LCIE, NIM, |
|          | (Fluke  |        |            |             | NPL, NRC,  |
|          | A55)    |        |            |             | OFM, ETL   |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 10 mV   | 100    | Bilateral, | Completed   | PTB &      |
| di       | to      | kHz to | June 1994  |             |            |
| fference |         |        |            |             | SP         |
|          | 100 mV  | 1 MHz, | informal   |             | (Sweden)   |
|          |         | Fluke  | with PTB   |             |            |
|          |         | 792A   | and SP     |             |            |
|          |         | Tr     |            |             |            |
|          |         | ansfer |            |             |            |
|          |         | sta    |            |             |            |
|          |         | ndard: |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 100 V - | 10     | Informal,  | Fluke       | PTB        |
| Di       | 1000 V  | Hz -   | mu         | resistors   | (Pilot),   |
| fference |         | 100 Hz | ltilateral |             | OFMET      |
|          |         |        | completed  | Completed   |            |
|          |         |        | 1999       |             |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 1 V - 2 | 10     | Informal,  | PTB multi   | PTB        |
| Di       | V       | MHz-1  | bilateral  | junction    | (Pilot)    |
| fference |         |        | completed  | thermal     |            |
|          |         |        | 1999       | converters  |            |
|          |         |        |            |             |            |
|          |         |        |            | Completed   |            |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 500 V - | 40     | Informal,  | OFMET       | OFMET      |
| Di       | 1000 V  | Hz -   | mu         | Resistors   | (Pilot),   |
| fference |         | 100 Hz | ltilateral |             | PTB        |
|          |         |        | completed  | Completed   |            |
|          |         |        | 1999       |             |            |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 500 V   |        | CCEM-K9    | In Progress | BNM-LCIE   |
| Transfer | and 100 |        |            |             | (Pilot),   |
| Di       | V       |        | 2000-2001  | See Also    | AREPA,     |
| fference |         |        |            | Under       | CEM,       |
|          | 1 kHz   |        |            | Category 2  | CSIR-NML,  |
|          | to 100  |        |            |             | CSIRO-NML, |
|          | kHz     |        |            | Report in   | IEN, INTI, |
|          |         |        |            | Progress    | KRISS,     |
|          |         |        |            |             | NIM, NIST, |
|          |         |        |            | Draft A     | NMi-VSL,   |
|          |         |        |            |             | NPL, NRC,  |
|          |         |        |            |             | OFMET,     |
|          |         |        |            |             | PTB, SP,   |
|          |         |        |            |             | VNIIM      |
+----------+---------+--------+------------+-------------+------------+
| AC power | 120 V,  | 50 Hz  | 1989       | IEEE I&M    | NRC, NPL   |
|          | 5 A     | to 5   |            | Tr          |            |
|          |         | kHz    |            | ansactions, |            |
|          |         |        |            | Apr 1991    |            |
+----------+---------+--------+------------+-------------+------------+
| AC       | 120 V,  | 53 Hz, | CCEM-K5    | Draft B     | NIST       |
| Powe     | 5 A     | pf     |            |             | (Pilot),   |
| r/Energy |         | 1.0,   | Began 1996 | Completed   | CENAM,     |
|          |         |        |            |             | CSIR-NML,  |
|          |         | 0.5    | Ended 2000 | Results     | CSIRO-NML, |
|          |         | (lead  |            | published   | IEN,       |
|          |         | & lag) |            | on BIPM     | INMETRO,   |
|          |         |        |            | website.    | INTI, MSL, |
|          |         | 0.0    |            |             | NIM, NPL,  |
|          |         | (lead  |            |             | NRC, PSB,  |
|          |         | & lag) |            |             | PTB, SP,   |
|          |         |        |            |             | VNIIM      |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| AC Power | 600 V,  | Calib  | SIM 1.8    | NRC piloted | N          |
|          | 100 A,  | ration |            | this effort | RC-Canada, |
|          | 5       | labo   | Completed  |             | NIST       |
|          | 0/60/63 | ratory |            | Same        |            |
|          | Hz,     | cond   |            | protocol as |            |
|          | 1.0,    | itions |            | for SIM 1.4 |            |
|          | 0.5 and |        |            |             |            |
|          | 0 pF    |        |            | Results     |            |
|          |         |        |            | published   |            |
|          |         |        |            | in I&M      |            |
|          |         |        |            | Tr          |            |
|          |         |        |            | ansactions, |            |
|          |         |        |            |             |            |
|          |         |        |            | April 2001  |            |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 500 V   | 50 kHz | CCEM-K6b   | Report in   | BNM-LCIE   |
| Transfer | to 1000 | to     |            | Progress    | (Pilot),   |
| Di       | V       | 100kHz | Began 1995 |             | NIST, BEV, |
| fference |         |        |            | Activity    | CEM, CMI,  |
|          |         |        | Ended 1999 | transferred | CSIR-NML,  |
|          |         |        |            | to CCEM-K9  | CSIRO-NML, |
|          |         |        |            |             | DFM, GUM,  |
|          |         |        |            |             | IEN,       |
|          |         |        |            |             | INETI,     |
|          |         |        |            |             | KRISS,     |
|          |         |        |            |             | NIM,       |
|          |         |        |            |             | NMi-VSL,   |
|          |         |        |            |             | NMS, NOM,  |
|          |         |        |            |             | NPL, NPC,  |
|          |         |        |            |             | OFMET,     |
|          |         |        |            |             | PTB, SP,   |
|          |         |        |            |             | VNIIM, VTT |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 3 V and | 1 MHz, | CCEM-K6c   | Approved    | Nmi-VSL    |
| Transfer | 4 V     | 10     |            | for         | (Pilot),   |
| Di       |         | MHz,   | Began 1995 | Provisional | NIST,      |
| fference |         | 30 MHz |            | Degree of   | AREPA,     |
|          |         | &      | Ended 1999 | Equivalence | BNM-LCIE,  |
|          |         |        |            |             | CEM,       |
|          |         | 50 MHz |            | Report in   | CSIRO-NML, |
|          |         |        |            | Progress,   | KRISS,     |
|          |         |        |            |             | NPL, NPLI, |
|          |         |        |            | Draft B.    | NRC,       |
|          |         |        |            | Reported in | OFMET,     |
|          |         |        |            | IEEE Trans. | OMH, PTB,  |
|          |         |        |            | Instrument  | SP, VNIIM  |
|          |         |        |            | Meas., 48,  |            |
|          |         |        |            | 154-157,    |            |
|          |         |        |            | 1999        |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Impulse  | 200 kV  | Std.   | CIGRE      | In          | PTB, NML,  |
| Voltage  |         | ligh   |            | ternational | NRC,       |
| Waveform |         | tning, | 1999-2000  | inte        | Korea,     |
|          |         | c      |            | rcomparison | Swiss,     |
|          |         | hopped |            | for mutual  | JEMA       |
|          |         | lig    |            | r           |            |
|          |         | htning |            | ecognition. |            |
|          |         |        |            |             |            |
|          |         |        |            | NIST        |            |
|          |         |        |            | m           |            |
|          |         |        |            | easurements |            |
|          |         |        |            | completed   |            |
|          |         |        |            | 12/99.      |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-28   | 33 Ghz | GT-RF 92-4 | Approved    | BNM-LCIE,  |
|          |         |        |            | for         | NIST, PTB, |
|          |         |        | CCEM       | Provisional | NPL, NRC,  |
|          |         |        | .RF-K1.a.W | Equivalence | VSL, NML   |
|          |         |        |            |             |            |
|          |         |        |            | IEEE Trans. |            |
|          |         |        |            | Instrum.    |            |
|          |         |        |            | Meas.,      |            |
|          |         |        |            | 1999, 48,   |            |
|          |         |        |            | 169-173     |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-15   | 62 Ghz | GT-RF 95-1 | Approved    | BNM-LCIE,  |
|          |         |        |            | for         | NIST, NPL, |
|          |         |        | CCEM       | Provisional | SSIA       |
|          |         |        | .RF-K1.b.W | Equivalence |            |
+----------+---------+--------+------------+-------------+------------+
| DCV      | 100     |        | CCEM-K8    | In          | IEN        |
| Ratio    | V/10 V  |        |            | Progress;   | (Pilot),   |
|          |         |        | Ended in   | Draft A     | BNM-LCIE,  |
|          | 1000    |        | 2001       | written,    | CEM,       |
|          | V/10 V  |        |            | but         | CSIR-NML,  |
|          |         |        |            | co          | CSIRO-NML, |
|          |         |        |            | ntroversial | NMIJ,      |
|          |         |        |            |             | KRISS,     |
|          |         |        |            |             | MSL, NIM,  |
|          |         |        |            |             | NPL NPLI,  |
|          |         |        |            |             | NRC, SP,   |
|          |         |        |            |             | VNIIM      |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-22   | 45 Ghz | GT-RF 97-2 | Approved    | NIST, NPL, |
|          |         |        |            | for         | BNM-LCIE,  |
|          |         |        | CCEM       | Provisional | VNIFTRI    |
|          |         |        | .RF-K1.c.W | Equivalence |            |
|          |         |        |            |             |            |
|          |         |        |            | Metrologia, |            |
|          |         |        |            | 38(5),      |            |
|          |         |        |            | 463-470,    |            |
|          |         |        |            | 2001        |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-10   | 75 &   | GT-RF 97-3 | Approved    | NPL,       |
|          |         | 94 Ghz |            | for         | BNM-LCIE,  |
|          |         |        | CCEM       | Provisional | NIST, ETL, |
|          |         |        | .RF-K1.d.W | Equivalence | PTB        |
+----------+---------+--------+------------+-------------+------------+
| Noise    | WR-90   | 9,10   | CT-RF      | Approved    | NPL,       |
|          |         | ,11,12 | 78-13      | for         | CSIRO-NML, |
|          |         | Ghz    |            | Provisional | BNM-LCIE,  |
|          |         |        | CC         | Equivalence | NIM, NIST, |
|          |         |        | EM.RF-K2.W |             | PTB        |
|          |         |        |            | NPL Report  |            |
|          |         |        |            | CETM 35     |            |
+----------+---------+--------+------------+-------------+------------+
| Horn     | WR-28   | 26.5,  | GT-RF 92-1 | Approved    | NPL, NIST, |
| Gain     |         | 33,    |            | for         | NMi-VSL,   |
|          |         | and 40 | CC         | Provisional | BNM-LCIE,  |
|          |         | GHz    | EM.RF-K3.F | Equivalence | KRISS      |
+----------+---------+--------+------------+-------------+------------+
| S-Pa     | GPC-7   | 2-18   | GT-RF 83-4 | Approved    | NPL,       |
| rameters |         | GHz    |            | for         | NMI-VSL,   |
|          |         |        | CCEM.      | Provisional | OFMET,     |
|          |         |        | RF-K5.a.CL | Equivalence | NIST, IEN, |
|          |         |        |            |             | BNM- LCIE, |
|          |         |        |            | NPL report  | PTB,       |
|          |         |        |            | CEM 52,     | CSIRO-NML, |
|          |         |        |            | Sept. 1997  | CM AB      |
+----------+---------+--------+------------+-------------+------------+
| Noise    | Coax,   | 2, 4,  | GT-RF 92-2 | Approved    | NIST,      |
|          | GPC-7   | 12 GHz |            | for         | BNM-LCIE,  |
|          |         |        | CCE        | Provisional | NPL, PTB   |
|          |         |        | M.RF.K6.CL | Equivalence |            |
|          |         |        |            |             |            |
|          |         |        |            | 1\) CPEM=98 |            |
|          |         |        |            | Conference  |            |
|          |         |        |            |             |            |
|          |         |        |            | Digest pp   |            |
|          |         |        |            | 615-616     |            |
|          |         |        |            |             |            |
|          |         |        |            | 2)IEEE      |            |
|          |         |        |            | Trans.      |            |
|          |         |        |            | Instrum.    |            |
|          |         |        |            | Meas.,      |            |
|          |         |        |            | 1999, 48,   |            |
|          |         |        |            | 174-177     |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Electric | Coax,   | 100,   | GT-RF 86-1 | Approved    | NIST,      |
| Field    | Type N  | 300,   |            | for         | BNM-LCIE,  |
| Strength |         | 500    | CCEM.      | Provisional | ETL, IEN,  |
|          |         | MHz, 1 | RF0K7.a.F1 | Equivalence | KRISS,     |
| 1991 -   |         | GHz    |            |             | NPL, TUW,  |
| 1999     |         |        |            | IEEE Trans. | Nmi-VSL    |
|          |         |        |            | EMC 42 (2), |            |
|          |         |        |            | 190-205,    |            |
|          |         |        |            | 2000        |            |
+----------+---------+--------+------------+-------------+------------+
| Electric | Coax,   | 2.45,  | GT-RF 86-1 | Approved    | NIST,      |
| Field    | Type N  | 10 GHz |            | for         | BNM-LCIE,  |
| Strength |         |        | CCEM.      | Provisional | ETL, IEN,  |
|          |         |        | RF-K7.a.F2 | Equivalence | KRISS,     |
| 1991 -   |         |        |            |             | NPL, TUW,  |
| 1999     |         |        |            | IEEE Trans. | Nmi-VSL    |
|          |         |        |            | EMC 42 (2), |            |
|          |         |        |            |             |            |
|          |         |        |            | 190-205,    |            |
|          |         |        |            | 2000        |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | Coax,   | 12, 14 | GT-RF      | Approved    | PTB,       |
|          | GPC-7   | & 17   | 75-A11     | for         | CSIRO-     |
|          |         | GHz    |            | Provisional | NML, NRC,  |
|          |         |        | CCEM       | Equivalence | OMH, IEN,  |
|          |         |        | .RFBK11.CL |             | NMI-       |
|          |         |        |            | IEEE Trans. | VSL,NIST,  |
|          |         |        |            | IM-43, 1,   | BNM-LCIE   |
|          |         |        |            | pp. 3-6,    |            |
|          |         |        |            | 1994        |            |
+----------+---------+--------+------------+-------------+------------+
| Voltage  | 100 V   | 30 MHz | GT-RF      | Approved    | PTB, NIST  |
|          |         |        | 75-A6      | for         |            |
|          |         |        |            | Provisional |            |
|          |         |        | CCEM       | Equivalence |            |
|          |         |        | .RF-K12.CL |             |            |
|          |         |        |            | IEEE I&M,   |            |
|          |         |        |            | Vol. 44, 2, |            |
|          |         |        |            | pp.         |            |
|          |         |        |            | 312-315,    |            |
|          |         |        |            | April 1995  |            |
+----------+---------+--------+------------+-------------+------------+
| Voltage  | 1 mV    | 30 MHz | GT-RF      | Approved    | PTB, ASMW, |
|          |         |        | 75-A7      | for         | NIST, NIM, |
|          |         |        |            | Provisional | OMH, PTF,  |
|          |         |        | CCEM       | Equivalence | NPL1       |
|          |         |        | .RF-K13.CL |             |            |
|          |         |        |            | IEEE I&M,   |            |
|          |         |        |            | Vol. 44,2,  |            |
|          |         |        |            | pp.         |            |
|          |         |        |            | 312-315,    |            |
|          |         |        |            | April 1995  |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Att      | Coax    | 30     | GT-RF 78-1 | Approved    | PTB, FFV,  |
| enuation |         | MHz,   |            | for         | NIST IEN,  |
|          | 60-100  |        | CCEM       | Provisional | BNM-LCIE,  |
|          | dB      |        | .RF-K15.CL | Equivalence | NIM,       |
|          |         |        |            |             | CSIRO-NML, |
|          |         |        |            | IEEE Trans  | NPL, OMH,  |
|          |         |        |            | IM-41,      | NMi- VSL,  |
|          |         |        |            |             | VNIIFTRI   |
|          |         |        |            | pp.         |            |
|          |         |        |            | 345-348,    |            |
|          |         |        |            | 1992        |            |
+----------+---------+--------+------------+-------------+------------+
| Re       | Coax,   | 0.5, 3 | GT-RF      | Approved    | PTB,       |
| flection | GR-900  | & 7    | 75-A4      | for         | CSIRO-NML, |
| Coe      |         | GHz    |            | Provisional | NRC, SMU,  |
| fficient |         |        | CCEM       | Equivalence | OMH, ETL,  |
|          |         |        | .RF-K16.CL |             | NMi-VSL,   |
|          |         |        |            | IEEE Trans. | SNIIM,     |
|          |         |        |            | IM-44, 26,  | NPL, NIST  |
|          |         |        |            |             |            |
|          |         |        |            | pp.         |            |
|          |         |        |            | 985-990,    |            |
|          |         |        |            | Dec. 1995   |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | Coax,   | 3 GHz  | URSI 1965  | IEEE Trans, | NIST       |
|          | GR-900  |        |            | MTT-19,     | (Pilot),   |
|          |         |        |            |             | NRC,       |
|          |         |        |            | pp.         | VNIIM,     |
|          |         |        |            | 411-413,    | DAMW, ETL  |
|          |         |        |            | 1971        |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-90   | 10 GHz | URSI 1965  | CCE 1972    | ETL        |
|          |         |        |            | Annexe E15  | (Pilot),   |
|          |         |        |            |             | DAMW,      |
|          |         |        |            |             | LCIE, NRC, |
|          |         |        |            |             | IRT, IMM,  |
|          |         |        |            |             | IEN, PTB   |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-28   | 35 GHz | GT-RF 72-5 | Metrologia, | NRC        |
|          |         |        |            | 17,         | (Pilot),   |
|          |         |        |            |             | NPL, ETL   |
|          |         |        |            | pp. 27-31,  |            |
|          |         |        |            | 1981        |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | Coax,   | 6 GHz  | GT-RF 72-6 | CCE         | NIST       |
|          | Type N, |        |            | Appendix E7 | (Pilot),   |
|          | GPC-7 & |        |            |             | NML, NPL,  |
|          | GR-900  |        |            |             | LCIE,      |
|          |         |        |            |             | RIND, NRC, |
|          |         |        |            |             | PTB, IEN,  |
|          |         |        |            |             | OMH        |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-62   | 15 GHz | GT-RF      | IEEE Trans. | PTB        |
|          |         |        | 75-A1      | IM-35, 2,   | (Pilot),   |
|          |         |        |            |             | NRC, NPL,  |
|          |         |        |            | pp.         | LCIE       |
|          |         |        |            | 116-120,    |            |
|          |         |        |            | June 1986   |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | Coax,   | 50     | GT-RF      | IEEE Trans. | NRC        |
|          | Type N, | MHz,   | 78-14      | IM-37, 1,   | (Pilot),   |
|          |         |        |            |             | ETL, NML,  |
|          | 1 mW    |        |            | pp.         | LCIE, PTB, |
|          |         |        |            | 160-162,    | IEN, NPL,  |
|          |         |        |            | March 1988  | VSL, FFV,  |
|          |         |        |            |             | OMH        |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-10   | 94 GHz | GT-RF 83-3 | IEEE Trans, | ETL        |
|          |         |        |            | IM-38, 4,   | (Pilot),   |
|          |         |        |            |             | NPL, LCIE  |
|          |         |        |            | pp. 927-929 |            |
|          |         |        |            | August 1989 |            |
+----------+---------+--------+------------+-------------+------------+
| Power    | WR-42   | 20 GHz | GT-RF 86-6 | GT-RF/95-9  | NRC        |
|          |         |        |            |             | (Pilot),   |
|          |         |        |            |             | LCIE,      |
|          |         |        |            |             | PTB,NPL    |
+----------+---------+--------+------------+-------------+------------+
| Att      | Coax,   | 0.5,   | GT-RF 1968 | CCE 1975    | NPL        |
| enuation | GR900   | 2      |            | Annexe E16  | (Pilot),   |
|          | 6,10,2  | ,4,7.5 |            |             | NRC, RIND  |
|          | 0,30,60 | GHz    |            |             |            |
|          | dB      |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Att      | Coax,   | 7 GHz  | GT-RF 72-2 | GT-RF       | NPL        |
| enuation | GR900   |        |            | /83-15      | (Pilot),   |
|          |         |        |            |             | IEN, PTB,  |
|          | 6,10,2  |        |            |             | RIND       |
|          | 0,30,60 |        |            |             |            |
|          | dB      |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Att      | 3,6,1   | 30 MHz | GT-RF      | IEEE Trans. | NML        |
| enuation | 0,20,40 |        | 72-10      | IM-29, 2,   | (Pilot),   |
|          | dB      |        |            |             | ETL, NPL,  |
|          |         |        |            | pp.         | NRC, OMH,  |
|          |         |        |            | 137-140,    | PTB, RIND  |
|          |         |        |            | June 1986   |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Att      | WR-62   | 15 GHz | GT-RF      | BIPM        | PTB        |
| enuation |         |        | 75-A3      | Monograph   | (Pilot),   |
|          | 0.01,   |        |            | 85/1, 1985  | IEN, OMH,  |
|          | 0.1,    |        |            |             | NPL        |
|          | 10,20,  |        |            |             |            |
|          |         |        |            |             |            |
|          | 40 dB   |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Att      | WR-28   | 35 GHz | GT-RF      | GT-RF/83-4  | NPL        |
| enuation |         |        | 75-A9      |             | (Pilot),   |
|          | 3,6,9,1 |        |            |             | NRC        |
|          | 0,20,30 |        |            |             |            |
|          | dB      |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Re       | WR-90   | 10 GHz | GT-RF      | IEEE Trans. | NPL        |
| flection |         |        | 75-A12     | IM-34, 3,   | (Pilot),   |
| Coe      |         |        |            |             | NML, ETL,  |
| fficient |         |        |            | pp 463-466, | IEN, NRC   |
|          |         |        |            | Sept. 1995  |            |
+----------+---------+--------+------------+-------------+------------+
| Re       | WR-28   | 27, 35 | GT-RF 86-3 | GT-RF/97-4  | NPL        |
| flection |         | & 40   |            |             | (Pilot),   |
| Coe      |         | GHz    |            |             | LCIE, NML, |
| fficient |         |        |            |             | PTB, NIM   |
+----------+---------+--------+------------+-------------+------------+
| Antenna  |         | 10     | GT-RF 92-8 | Approved    | NPL,       |
| Factor   |         | kHz -  |            | for         | CSIRO-NMI, |
|          |         | 1 GHz  | CCEM       | Provisional | IEN, ETL,  |
|          |         |        | .RF-K7.b.F | Equivalence | NIST       |
+----------+---------+--------+------------+-------------+------------+
| I        | GR 900  | 100,2  | GT-RF      | Metrologia, | NPL        |
| mpedance |         | 00,300 | 78-11      | 30, 1993    | (Pilot),   |
|          |         | MHz    |            |             | PTB, VSL,  |
|          |         |        |            |             | NML        |
+----------+---------+--------+------------+-------------+------------+
| I        |         | 0      | GT-RF 86-2 | GT-RF/97-3  | NIST       |
| mpedance |         | .05-45 |            |             | (Pilot),   |
| Q-S      |         | MHz    |            |             | SESC, PTB, |
| tandards |         |        |            |             | LCIE       |
+----------+---------+--------+------------+-------------+------------+
| Voltage  | GR-900  | 1 GHz  | GT-RF 1968 | NIST        | EQD, NPL,  |
|          |         |        |            | (Pilot),    | NRC, OMH   |
|          |         |        |            |             |            |
|          |         |        |            | IEEE Trans, |            |
|          |         |        |            | IM-25       |            |
|          |         |        |            |             |            |
|          |         |        |            | pp. 254-5,  |            |
|          |         |        |            | 1976        |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Voltage  | 1 V     | 1 MHz  | GT-RF 72-3 | CCE 1978    | NPL        |
|          |         |        |            | Annexe E13  | (Pilot),   |
|          |         |        |            |             | ASMW, EQD, |
|          |         |        |            |             | IEN, NML,  |
|          |         |        |            |             | OMH, PTB   |
+----------+---------+--------+------------+-------------+------------+
| Voltage  | 1 V     | 100,   | GT-RF      | Metrologia, | PTB        |
|          |         | 250,   | 75-A5      | 20, 1984    | (Pilot),   |
|          |         | 500 &  |            | pp. 115-116 | ASMW,      |
|          |         |        |            |             | SESC,NML,  |
|          |         | 1000   |            |             | OMH, IHM   |
|          |         | MHz    |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| HF       | 1 V to  | 10 MHz | Mul        | IEEE I&M    | PTB, VSL   |
| voltage  | 10 V    | to     | tilateral, | Vol. 42,    | NIM, SIRI  |
|          |         |        | 1988-90    | No.2 April  |            |
| AC-DC    |         | 100    |            | 1993.       | NIST       |
| di       |         | MHz.   |            |             | (Pilot)    |
| fference |         | Tr     |            | pp. 618-621 |            |
|          |         | ansfer |            |             |            |
|          |         | stan   |            |             |            |
|          |         | dard:T |            |             |            |
|          |         | hermal |            |             |            |
|          |         | conv   |            |             |            |
|          |         | erters |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| HF       | 4 V to  | 100    | Mu         | IEEE I&M    | PTB,       |
| voltage  | 10 V    | kHz to | ltilateral | Vol. 42,    | VSL,NPL,   |
|          |         |        |            | No.2 April  |            |
| AC-DC    |         | 1 MHz  | 1988-1990  | 1993.       | NIST       |
| di       |         |        |            |             | (Pilot)    |
| fference |         |        |            | pp. 615-617 |            |
+----------+---------+--------+------------+-------------+------------+
| Noise    | Coax,   | 2, 4,  | Bilateral  | IEEE Trans. | NIST       |
|          | GPC-7   | 8 GHz  |            | IM, Vol.    | (Pilot),   |
|          |         |        |            | 40, 2, pp.  | PTB        |
|          |         |        |            | 449-454     |            |
|          |         |        |            | Apr. 1991   |            |
+----------+---------+--------+------------+-------------+------------+
| Electric |         | 100    | GT-RF 72-7 | IEEE Trans. | NIST       |
| Field    |         | MHz    |            | IM-32,1,    | (Pilot),   |
| Strength |         |        |            | pp.         | FTZ, IEN,  |
|          |         |        |            | 235-237,    | UTW        |
|          |         |        |            | 1983        |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| Ele      |         |        |            |             |            |
| ctricity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| Power    |         | 2.45   | GT-RF      | GT-RF/83-2  | NML        |
| Flux     |         | GHz    | 72-11      |             | (Pilot),   |
| Density  |         |        |            |             | BRH, IEN,  |
|          |         |        |            |             | NPL, RIND  |
+----------+---------+--------+------------+-------------+------------+
| Horn     | WR-90   | 8-12   | GT-RF 78-5 | IEEE Trans. | NIST       |
| Gain     |         | GHz    |            | AP, 44, 10, | (Pilot),   |
|          |         |        |            | Oct. 1996,  | NPL, TUD,  |
|          |         |        |            |             | FTZ, CNET, |
|          |         |        |            | pp.         | NML, VSL   |
|          |         |        |            | 1367-1374   |            |
+----------+---------+--------+------------+-------------+------------+
| AC-DC    | 1 V - 4 | 10 Hz  | Mu         | CPEM 2000   | NRC        |
| Di       | V       | --     | ltilateral | Digest      | (Pilot),   |
| fference |         |        | 1999 -     |             | NMI, PTB   |
| 10Hz -   |         | 100    | 2000       |             |            |
| 100 MHz  |         | MHz    |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Transi   | 1 A/V   | 60 Hz  | Bilateral, | Results     | NRC        |
| mpedance | -- 100  |        | May 2002   | published   | (Pilot),   |
|          | A/V     |        |            | I&M         | NIST       |
|          |         |        |            | Tr          |            |
|          |         |        |            | ansactions, |            |
|          |         |        |            |             |            |
|          |         |        |            | April 2003  |            |
+----------+---------+--------+------------+-------------+------------+
| #        | 300 mA  | 50 Hz  | Bilateral, | CPEM 2004   | NRC        |
| AC Shunt | -- 10 A | -- 10  | April 2004 | Digest,     | (pilot),   |
|          |         | kHz    |            | accepted    | NIST       |
|          |         |        |            | for         |            |
|          |         |        |            | p           |            |
|          |         |        |            | ublication, |            |
|          |         |        |            | I&M         |            |
|          |         |        |            | T           |            |
|          |         |        |            | ransactions |            |
+----------+---------+--------+------------+-------------+------------+
| DC & AC  | M       | DC and | SIM 1.1,   | In          | Most of    |
| Voltage, | ultiple | mu     | 1997 --    | progress.   | the SIM    |
| DC & AC  | ranges  | ltiple | 2000       |             | la         |
| Current, | of dc & | frequ  |            |             | boratories |
| DC       | ac      | encies |            |             |            |
| Re       | v       | co     |            |             |            |
| sistance | oltage, | vering |            |             |            |
|          | c       | HP     |            |             |            |
|          | urrent, | 3458.  |            |             |            |
|          | and     |        |            |             |            |
|          | res     |        |            |             |            |
|          | istance |        |            |             |            |
|          | c       |        |            |             |            |
|          | overing |        |            |             |            |
|          | op      |        |            |             |            |
|          | erating |        |            |             |            |
|          | ranges  |        |            |             |            |
|          | of HP   |        |            |             |            |
|          | 3458.   |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+

  ------------------ ----------- ------------- ------------------ ---------------- --------------
  Field of Interest:                                                               
  Electricity                                                                      

  Category 1:                                                                      
  Intercomparisons                                                                 
  already performed                                                                
  (continued)                                                                      

  Measuring quantity Measuring   Measuring     Type and date of   Comments         Other
                     range       conditions    intercomparisons                    participants

  Dielectric         1 MHz to 10 Ambient       1963 International IRE Trans.       NPL NBS
  measurements       GHz         temperature   Dielectric         Instrumenation   (lead), NRC
                                               Intercompariso     Measurements Vol (Canada)
                                                                  IM-13, pp        
                                                                  305-311, 1964    

  Dielectric         1 GHz to 10 Ambient       1973 International IEEE Trans.      NPL NBS
  measurements       GHz         temperature   Dielectric         Instrumenation   (lead),
                                               Intercomparison    and Measurements VNIIFTRI
                                                                  Vol. IM-23,      
                                                                  Sept. 1974       
  ------------------ ----------- ------------- ------------------ ---------------- --------------

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| S        |         |        |            |             |            |
| upercond |         |        |            |             |            |
| uctivity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| I~c~ of  | 30-600  | 4.2 K, | Mul        | No standard | 24 labs    |
| Nb~3~Sn  | A       |        | tilateral, | technique,  | from       |
| wire     |         | 5-20 T |            |             | Japan,     |
|          |         |        | Completed  | COV 8% at   | Europe,    |
|          |         |        | 1989       | 12 T,       | and USA    |
|          |         |        |            | Cryogenics  |            |
|          |         |        | VAMAS      | [29]{.      |            |
|          |         |        |            | underline}, |            |
|          |         |        |            | 710 (1989). |            |
+----------+---------+--------+------------+-------------+------------+
| I~c~ of  | 70-500  | 4.2 K, | Mul        | Standard    | 13 labs    |
| Nb~3~Sn  | A       | 6-16   | tilateral, | technique,  | from       |
| wire     |         | T,     | Completed  | COV 2.2% at | Japan,     |
|          |         | Ref    | 1995       | 12T,        | Europe,    |
|          |         | erence |            | Cryogenics  | and USA    |
|          |         | SR     | VAMAS      | [35]{.      |            |
|          |         | M-1457 |            | underline}, |            |
|          |         |        |            | S65 (1995). |            |
+----------+---------+--------+------------+-------------+------------+
| I~c~ and | I~c~ -  | I~c~   | Mul        | I~c~ within | 2 labs     |
| RRR of   | 2000 A, | at 4.2 | tilateral, | 4% and RRR  | from       |
|          | RRR     | K and  |            | within 2%.  | Europe     |
| Nb-Ti    |         |        | Completed  | IEEE Trans. |            |
| wire     | \- 160  | 5 T    | 2001       | Appl.       |            |
|          | (r      |        |            | Supercond.  |            |
|          | esidual |        |            | [12]{       |            |
|          | resi    |        |            | .underline} |            |
|          | stivity |        |            | (1) 1014    |            |
|          | ratio)  |        |            | (2002)      |            |
+----------+---------+--------+------------+-------------+------------+
| I~c~ of  | 2 and   | near   | Informal,  | IEEE Trans. | 11 labs    |
| NIST     | 50 A    | room   |            | Appl.       | from USA   |
| I~c~     |         | tempe  | Completed  | Supercond.  |            |
| s        |         | rature | 1994       | [5]{        |            |
| imulator |         |        |            | .underline} |            |
|          |         |        | VAMAS      | (2) 548     |            |
|          |         |        |            |             |            |
|          |         |        |            | \(1995\)    |            |
+----------+---------+--------+------------+-------------+------------+
| I~c~ of  | 0 to    | 4.2    | Mul        | J. Res.     | 5 labs     |
| Bi-based | 100 A   | and 77 | tilateral, | NIST        | from USA   |
| wire     |         | K      |            |             |            |
|          |         |        | Completed  | [102]{      |            |
|          |         | 0 to 8 | 1995       | .underline} |            |
|          |         | T      |            | 29 (1997)   |            |
|          |         |        | VAMAS      |             |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| S        |         |        |            |             |            |
| upercond |         |        |            |             |            |
| uctivity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| RRR of   | RRR -   | 4.2 K  | Mul        | One lab was | 2 labs     |
| pure Nb  | 450     | and    | tilateral, | different   | from USA   |
|          | (r      | 0-7 T  |            | by 12% and  |            |
|          | esidual |        | Completed  | had a       |            |
|          | resi    |        | 2001       | variability |            |
|          | stivity |        |            | of more     |            |
|          | ratio)  |        |            | than 22%.   |            |
|          |         |        |            | No          |            |
|          |         |        |            | publication |            |
|          |         |        |            | planned.    |            |
+----------+---------+--------+------------+-------------+------------+
| I~c~ of  | 2 and   | near   | Informal,  | No          | NIST,      |
| NIST     | 50 A    | room   |            | publication | Univ. of   |
| I~c~     |         | tempe  | Completed  | planned     | Twente     |
| s        |         | rature | 1994       |             | (The       |
| imulator |         |        |            |             | Net        |
|          |         |        | VAMAS      |             | herlands), |
|          |         |        |            |             | NRIM       |
|          |         |        |            |             | (Japan)    |
+----------+---------+--------+------------+-------------+------------+
| H~c2~ of | 11.4 T  | 4.2 K  | Mul        | Standard    | 12 labs    |
| Nb-Ti    |         |        | tilateral, | technique,  | from       |
| SRM-1457 |         |        |            |             | Japan,     |
|          |         |        | Completed  | COV 0.6%,   | Europe,    |
|          |         |        | 1994       |             | and USA    |
|          |         |        |            | IEEE Trans. |            |
|          |         |        | VAMAS      | on Appl.    |            |
|          |         |        |            | Super.      |            |
|          |         |        |            | [5]{        |            |
|          |         |        |            | .underline} |            |
|          |         |        |            | (2) 536     |            |
|          |         |        |            | (1995)      |            |
+----------+---------+--------+------------+-------------+------------+
| I~c~ of  | 100-200 | 4.2 K, | Mul        | No standard | 5 labs     |
| Nb~3~Sn  | A       |        | tilateral, | technique,  | from       |
| wire     |         | 12 T   |            |             | Japan,     |
|          |         |        | Completed  | 30-38%      | Europe,    |
|          |         |        | 1994       | range at    | Russian    |
|          |         |        |            | 12T,        | F          |
|          |         |        | ITER       |             | ederation, |
|          |         |        |            | IEEE Trans. | and USA    |
|          |         |        |            | on Appl.    |            |
|          |         |        |            | Super.      |            |
|          |         |        |            | [5]{        |            |
|          |         |        |            | .underline} |            |
|          |         |        |            | (2) 905     |            |
|          |         |        |            | (1995)      |            |
+----------+---------+--------+------------+-------------+------------+
| I~c~ of  | 100-200 | 4.2 K, | Mul        | Standard    | 4 labs     |
| Nb~3~Sn  | A       |        | tilateral, | technique,  | from       |
| wire     |         | 12 T   |            |             | Japan,     |
|          |         |        | Completed  | 1-3% range  | Europe,    |
|          |         |        | 1995       | at 12T      | Russian    |
|          |         |        |            |             | F          |
|          |         |        | ITER       | Adv. Cryo.  | ederation, |
|          |         |        |            | Eng.-       | and USA    |
|          |         |        |            | Materials   |            |
|          |         |        |            | 42B,        |            |
|          |         |        |            | 1351-1358   |            |
|          |         |        |            | (1997)      |            |
+----------+---------+--------+------------+-------------+------------+

+----------+---------+--------+------------+-------------+------------+
| Field of |         |        |            |             |            |
| I        |         |        |            |             |            |
| nterest: |         |        |            |             |            |
| S        |         |        |            |             |            |
| upercond |         |        |            |             |            |
| uctivity |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| Category |         |        |            |             |            |
| 1:       |         |        |            |             |            |
| Intercom |         |        |            |             |            |
| parisons |         |        |            |             |            |
| already  |         |        |            |             |            |
| p        |         |        |            |             |            |
| erformed |         |        |            |             |            |
| (co      |         |        |            |             |            |
| ntinued) |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+
| M        | Me      | Mea    | Type and   | Comments    | Other      |
| easuring | asuring | suring | date of    |             | pa         |
| quantity | range   | cond   | interc     |             | rticipants |
|          |         | itions | omparisons |             |            |
+----------+---------+--------+------------+-------------+------------+
| AC       | Field   | 4.2 K, | Mul        | NIST        | 5 labs     |
| losses   | \"3T    | field  | tilateral, | discovered  | from       |
| of       |         | p      |            | source of   | Japan,     |
| Nb~3~Sn  |         | erpend | Completed  | systematic  | Europe,    |
| wire     |         | icular | 1993-1997  | error in    | Russian    |
|          |         | to     |            | m           | F          |
|          |         | wire   | ITER       | easurements | ederation, |
|          |         |        |            |             | and USA    |
|          |         |        |            | Adv. Cryo.  |            |
|          |         |        |            | Eng.-       |            |
|          |         |        |            | Materials   |            |
|          |         |        |            | 42 B,       |            |
|          |         |        |            | 1351-1358   |            |
|          |         |        |            | (1997)      |            |
+----------+---------+--------+------------+-------------+------------+
| Strain   | 0 - 1%  | 4.2 K  | Mul        |             | 3 to 6     |
| effect   | strain  |        | tilateral, |             | labs from  |
| on I~c~  |         |        |            |             | Japan,     |
| of       | 8 - 16  |        | Completed  |             | Europe,    |
| Nb~3~Sn  | T       |        | 1995       |             | and USA    |
| wires    |         |        |            |             |            |
|          |         |        | ITER       |             |            |
+----------+---------+--------+------------+-------------+------------+
| Critical | Field   | 4.2 K  | Mul        | Agreement   | Organized  |
| current  | 12 T,   |        | tilateral, | reasonably  | by         |
| I~c~ of  |         |        | 2004       | good.       | Lawrence   |
| ma       | 8 -- 16 |        |            |             | Berkeley   |
| rginally | T       |        | DOE HEP    |             | L          |
| stable   |         |        |            |             | aboratory, |
| Nb~3~Sn  |         |        |            |             | 4 labs     |
| wires    |         |        |            |             |            |
+----------+---------+--------+------------+-------------+------------+

+-----------+-----------+-----------+-----------+-----------+-----------+
| Field of  |           |           |           |           |           |
| Interest: |           |           |           |           |           |
| Optics    |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Category  |           |           |           |           |           |
| 1:        |           |           |           |           |           |
| Interco   |           |           |           |           |           |
| mparisons |           |           |           |           |           |
| already   |           |           |           |           |           |
| performed |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Measuring | Measuring | Measuring | Type and  | Comments  | Other     |
| quantity  | range     | c         | date of   |           | par       |
|           |           | onditions | interco   |           | ticipants |
|           |           |           | mparisons |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Laser     | 1.3 μm    |           | G         | Completed | VSL, PTB  |
| power     |           |           | T-RF-86-4 |           |           |
|           | 1.55 μm   |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Laser     | 1.06 μm,  |           | 1996-99   | Completed | PTB       |
| power     | 100 W     |           |           | 1999      |           |
|           |           |           |           |           |           |
|           | 10.6 μm,  |           |           |           |           |
|           |           |           |           |           |           |
|           | 100 W -   |           |           |           |           |
|           | 500 W     |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Chromatic | λ=1550 nm | Zero      | 1995-96   | C         | NPL       |
| d         |           | d         |           | ompleted, |           |
| ispersion | λ=1300 nm | ispersion |           | NIST/NPL  |           |
| of single |           | w         |           | pu        |           |
| mode      |           | avelength |           | blication |           |
| optical   |           |           |           | submitted |           |
| fibers    |           |           |           | to        |           |
|           |           |           |           | Me        |           |
|           |           |           |           | trologia, |           |
|           |           |           |           | SRMs      |           |
|           |           |           |           | available |           |
|           |           |           |           | for sale  |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Coating   | 245 μm    | Contact   | 1996-97   | C         | NPL       |
| diameter  | nominal   | m         |           | ompleted, |           |
| of single |           | icrometer |           | informal  |           |
| mode      |           |           |           | co        |           |
| optical   |           |           |           | mparisons |           |
| fibers    |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Erb       |           | Pin       | IEC-      | Mea       | 15-20     |
| ium-doped |           | range:    | initiated | surements | lab       |
| fiber     |           | -40 dBm - | 1996-99   | completed | oratories |
| a         |           | +3 dBm    |           | in 1999.  | from      |
| mplifiers |           |           |           | Final IEC | Japan,    |
|           |           | λ range:  |           | report in | Europe,   |
| gain,     |           | 1530 nm - |           | 2000      | and North |
| power,    |           | 1565 nm   |           |           | America   |
| and noise |           |           |           |           |           |
| figure    |           |           |           |           |           |
| p         |           |           |           |           |           |
| arameters |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+

+-----------+-----------+-----------+-----------+-----------+-----------+
| Field of  |           |           |           |           |           |
| Interest: |           |           |           |           |           |
| Optics    |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Category  |           |           |           |           |           |
| 1:        |           |           |           |           |           |
| Interco   |           |           |           |           |           |
| mparisons |           |           |           |           |           |
| already   |           |           |           |           |           |
| performed |           |           |           |           |           |
| (c        |           |           |           |           |           |
| ontinued) |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Measuring | Measuring | Measuring | Type and  | Comments  | Other     |
| quantity  | range     | c         | date of   |           | par       |
|           |           | onditions | interco   |           | ticipants |
|           |           |           | mparisons |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Optical   | 1300 and  | C         | 2000      | Completed | PTB       |
| Power     | 1550 nm   | ollimated |           | NIST/PTB  |           |
|           |           | beam      |           | pub       |           |
|           |           |           |           | lication, |           |
|           |           |           |           | AC        |           |
|           |           |           |           | omparison |           |
|           |           |           |           | of        |           |
|           |           |           |           | Opti      |           |
|           |           |           |           | cal-power |           |
|           |           |           |           | meters    |           |
|           |           |           |           | between   |           |
|           |           |           |           | NIST and  |           |
|           |           |           |           | the PTB.@ |           |
|           |           |           |           |           |           |
|           |           |           |           | Me        |           |
|           |           |           |           | trologia, |           |
|           |           |           |           | 2000      |           |
|           |           |           |           |           |           |
|           |           |           |           | 37,       |           |
|           |           |           |           | 349-350   |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Multimode | 850 and   | Various   | TIA -     | C         | 2         |
| fiber     | 1300 nm   | launching | Gigabit   | ompleted. | par       |
| bandwidth |           | co        | ethernet, | NIST      | ticipants |
|           |           | nditions, | initiated | mea       | from      |
|           |           | source    | 1997      | surements | Europe, 1 |
|           |           | charact   |           | of        | from      |
|           |           | erization |           | bandwidth | Japan,    |
|           |           |           |           | and       | rest from |
|           |           |           |           | dif       | USA       |
|           |           |           |           | ferential |           |
|           |           |           |           | delay     |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Fiber     | -330 nm - | Connector | TIA-      | C         | 17        |
| connector | +210 nm,  | ferrules  | initiated | ompleted. | lab       |
| end face  |           | c         | 1996-97   | NIST      | oratories |
| geometry: | 10 mm -   | irculated |           | coo       | from USA  |
| U         | 25 mm     |           |           | rdination | and       |
| ndercut/p |           |           |           | and data  | Europe    |
| rotrusion | 3 μm - 42 |           |           | analysis. |           |
| radius of | μm        |           |           | No NIST   |           |
| curviture |           |           |           | meas      |           |
| and apex  |           |           |           | urements. |           |
| offset    |           |           |           | Interf    |           |
|           |           |           |           | erometric |           |
|           |           |           |           | and       |           |
|           |           |           |           | m         |           |
|           |           |           |           | echanical |           |
|           |           |           |           | methods   |           |
+-----------+-----------+-----------+-----------+-----------+-----------+

+-----------+-----------+-----------+-----------+-----------+-----------+
| Field of  |           |           |           |           |           |
| Interest: |           |           |           |           |           |
| Optics    |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Category  |           |           |           |           |           |
| 1:        |           |           |           |           |           |
| Interco   |           |           |           |           |           |
| mparisons |           |           |           |           |           |
| already   |           |           |           |           |           |
| performed |           |           |           |           |           |
| (c        |           |           |           |           |           |
| ontinued) |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Measuring | Measuring | Measuring | Type and  | Comments  | Other     |
| quantity  | range     | c         | date of   |           | par       |
|           |           | onditions | interco   |           | ticipants |
|           |           |           | mparisons |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Optical   | 1514 nm - |           | 1999-00   | Completed | NPL       |
| spectrum  | 1597 nm   |           |           |           |           |
| analyzer  |           |           |           |           | Danish    |
| w         |           |           |           |           | Institute |
| avelength |           |           |           |           | of        |
| ca        |           |           |           |           | Fu        |
| libration |           |           |           |           | ndamental |
|           |           |           |           |           | Metrology |
|           |           |           |           |           | (DFM)     |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Fiber     |           | Spectral  | 1999-00   | Completed | Ag        |
| Bragg     |           | response  |           |           | ilent/HP; |
| grating   |           | and       |           |           | Corning;  |
| charact   |           | d         |           |           | 3M; EG&G  |
| erization |           | ispersion |           |           | Fiber     |
|           |           |           |           |           | Optics;   |
|           |           |           |           |           | GN        |
|           |           |           |           |           | netest/PK |
|           |           |           |           |           | Te        |
|           |           |           |           |           | chnology, |
|           |           |           |           |           | Inc.;     |
|           |           |           |           |           | ADC,      |
|           |           |           |           |           | Inc.;     |
|           |           |           |           |           | NPL; Blue |
|           |           |           |           |           | Road      |
|           |           |           |           |           | Research; |
|           |           |           |           |           | MICRON    |
|           |           |           |           |           | OPTICS;   |
|           |           |           |           |           | Naval     |
|           |           |           |           |           | Research  |
|           |           |           |           |           | Lab.;     |
|           |           |           |           |           | CiDRA     |
|           |           |           |           |           | Corp.;    |
|           |           |           |           |           | EXFO Inc. |
+-----------+-----------+-----------+-----------+-----------+-----------+

+-----------+-----------+-----------+-----------+-----------+-----------+
| Field of  |           |           |           |           |           |
| Interest: |           |           |           |           |           |
| Optics    |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Category  |           |           |           |           |           |
| 1:        |           |           |           |           |           |
| Interco   |           |           |           |           |           |
| mparisons |           |           |           |           |           |
| already   |           |           |           |           |           |
| performed |           |           |           |           |           |
| (c        |           |           |           |           |           |
| ontinued) |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Measuring | Measuring | Measuring | Type and  | Comments  | Other     |
| quantity  | range     | c         | date of   |           | par       |
|           |           | onditions | interco   |           | ticipants |
|           |           |           | mparisons |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Optical   | 1300 and  | Fiber     | 2000      | Completed | VNII OFI  |
| Fiber     | 1550 nm   | Coupled   |           | pu        |           |
| Power     |           |           |           | blication |           |
|           |           |           |           | AC        |           |
|           |           |           |           | omparison |           |
|           |           |           |           | of        |           |
|           |           |           |           | reference |           |
|           |           |           |           | standards |           |
|           |           |           |           | for       |           |
|           |           |           |           | mea       |           |
|           |           |           |           | surements |           |
|           |           |           |           | of        |           |
|           |           |           |           | opti      |           |
|           |           |           |           | cal-fiber |           |
|           |           |           |           | power@    |           |
|           |           |           |           |           |           |
|           |           |           |           | M         |           |
|           |           |           |           | etrologia |           |
|           |           |           |           | 2000      |           |
|           |           |           |           |           |           |
|           |           |           |           | 37,       |           |
|           |           |           |           | 347-348   |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Effective |           | 1550 nm,  | TIA-      | NIST      | 6-11      |
| Area and  |           | 4 fibers, | initiated | coo       | labo      |
| M         |           |           | 1998-99   | rdination | ratories, |
| ode-Field |           | 2 m       |           | and data  | mostly    |
| Diameter  |           | lengths,  |           | analysis, | U.S., but |
| of        |           |           |           | NIST      | some      |
| si        |           | 2         |           | mea       | European  |
| ngle-mode |           | far-field |           | surements | meas      |
| and       |           | methods,  |           | of        | urements, |
| la        |           | possibly  |           | m         | possibly  |
| rge-effec |           | n         |           | ode-field | Alcatel   |
| tive-area |           | ear-field |           | diameter. | (France), |
| fibers    |           | method    |           |           | NPL,      |
|           |           | also.     |           | Completed | PK/York   |
|           |           |           |           |           | (UK), and |
|           |           |           |           |           | EG&G (UK) |
+-----------+-----------+-----------+-----------+-----------+-----------+

+-----------+-----------+-----------+-----------+-----------+-----------+
| Field of  |           |           |           |           |           |
| Interest: |           |           |           |           |           |
| Optics    |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Category  |           |           |           |           |           |
| 1:        |           |           |           |           |           |
| Interco   |           |           |           |           |           |
| mparisons |           |           |           |           |           |
| already   |           |           |           |           |           |
| performed |           |           |           |           |           |
| (c        |           |           |           |           |           |
| ontinued) |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Measuring | Measuring | Measuring | Type and  | Comments  | Other     |
| quantity  | range     | c         | date of   |           | par       |
|           |           | onditions | interco   |           | ticipants |
|           |           |           | mparisons |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Nonlinear | 1550 nm   | CW and    | TIA-      | NIST      | 8         |
| Co        |           | pulsed    | initiated | Coo       | lab       |
| efficient |           | methods   |           | rdination | oratories |
| of        |           |           | 1999-2000 | and data  | including |
|           |           | Dis       |           | analysis; | 1         |
| si        |           | persion-u |           | no NIST   | Canadian  |
| ngle-mode |           | nshifted, |           | meas      | and 1     |
| fibers    |           |           |           | urements. | European. |
|           |           | -shifted, |           |           |           |
|           |           | and       |           | Completed |           |
|           |           |           |           | in 2000   |           |
|           |           | -com      |           |           |           |
|           |           | pensating |           |           |           |
|           |           | fibers    |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Relative  | 1554 nm   | Hydrogen  | 2001      | Completed | Agilent   |
| group     |           | Cyanide   |           |           | (Germany) |
| delay     | 0-15 p3   | a         |           |           |           |
|           |           | bsorption |           |           | Agilent   |
|           |           | cell      |           |           | (Palo     |
|           |           |           |           |           | Alto)     |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Photolum  | 1.0, 1.3  | Center of | 2001-2002 | C         | Agere,    |
| inescence | and 1.5   | 1-cm^2^   |           | ompleted; | Agilent,  |
| and X-ray | pm        | piece     |           | results   | IQE,      |
| di        |           |           |           | accepted  | JDSU,     |
| ffraction |           |           |           | for       | Nortel    |
| rocking   |           |           |           | pu        |           |
| curves    |           |           |           | blication |           |
|           |           |           |           | in J.     |           |
|           |           |           |           | Crystal   |           |
|           |           |           |           | Growth    |           |
|           |           |           |           | and       |           |
|           |           |           |           | Physica   |           |
|           |           |           |           | Status    |           |
|           |           |           |           | Solidi.   |           |
|           |           |           |           | NIST      |           |
|           |           |           |           | coo       |           |
|           |           |           |           | rdination |           |
|           |           |           |           | and data  |           |
|           |           |           |           | analysis; |           |
|           |           |           |           | no NIST   |           |
|           |           |           |           | meas      |           |
|           |           |           |           | urements. |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Relative  | 1310 and  | 4 fiber   | Euromet   | Report in | CSIC,     |
| group     | 1550 nm   | types,    | supp      | Progress  | HUT, NPL, |
| delay,    | windows   | G652,     | lementary |           | METAS     |
| chromatic |           | G653,     | co        | Draft B   |           |
| di        |           | G655-     | mparison, |           |           |
| spersion, |           | TeraLight |           |           |           |
| λ~ο~      |           | and       | 2003-2004 |           |           |
|           |           | G655-Leaf |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+

+-----------+-----------+-----------+-----------+-----------+-----------+
| Field of  |           |           |           |           |           |
| Interest: |           |           |           |           |           |
| Optics    |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Category  |           |           |           |           |           |
| 1:        |           |           |           |           |           |
| Interco   |           |           |           |           |           |
| mparisons |           |           |           |           |           |
| already   |           |           |           |           |           |
| performed |           |           |           |           |           |
| (c        |           |           |           |           |           |
| ontinued) |           |           |           |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Measuring | Measuring | Measuring | Type and  | Comments  | Other     |
| quantity  | range     | c         | date of   |           | par       |
|           |           | onditions | interco   |           | ticipants |
|           |           |           | mparisons |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Excimer   | 248, 193, | Various   | Bilateral | Mea       | PTB       |
| laser     | and       | energies  | 2003 (PTB | surements |           |
| power     |           | and rep   | visit to  | c         |           |
|           | 157 nm    | rates     | NIST in   | ompleted; |           |
|           |           |           | May)      | writing   |           |
|           |           |           |           | results   |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Optical   | 980,      | 100 µW    | Bilateral | Awaiting  | NPL       |
| Fiber     | 1310,     | and up to | --        | results   |           |
| Power     | 1550 nm   | 200 mW    | started   | from      |           |
|           |           |           | in 2003   | other     |           |
|           |           |           |           | pa        |           |
|           |           |           |           | rticipant |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| Optical   | 1310 and  | 100 µW    | Bilateral | Awaiting  | METAS     |
| Fiber     | 1550 nm   |           | --        | results   |           |
| Power     |           |           | started   | from      |           |
|           |           |           | in 2003   | other     |           |
|           |           |           |           | pa        |           |
|           |           |           |           | rticipant |           |
+-----------+-----------+-----------+-----------+-----------+-----------+
| High      | 488, 514, | 100 uW to | 2003 --   | Starting  | NIST 844  |
| accuracy  | and       | 1 mW 815  | Internal  | 11/03     |           |
| cryogenic |           | built     | with PL   |           |           |
| r         | 633 nm    | trap and  | to        |           |           |
| adiometer |           | c         | compare   |           |           |
|           |           | ommercial | 815 LOCR  |           |           |
|           |           | detector  | to PL's   |           |           |
|           |           |           | HACR      |           |           |
+-----------+-----------+-----------+-----------+-----------+-----------+

  ------------------ ----------- ------------ ------------------ ----------- ---------------
  Field of Interest:                                                         
  Law Enforcement                                                            

  Category 1:                                                                
  Intercomparisons                                                           
  already performed                                                          

  Measuring quantity Measuring   Measuring    Type and date of   Comments    Other
                     range       conditions   intercomparisons               participant

  Penetration of     24 J to 65  PSDB drop    Initiated in 1999  Complete    2 laboratories:
  standard material  J impact    test fixture to evaluate                    Home Office,
  by engineered      energy                   reproducibility of             Police
  knife blades                                drop test fixtures             Scientific and
                                              used in                        Development
                                              development of                 Branch
                                              standards for                  (Sandridge, UK)
                                              stab-resistant                 and Royal
                                              body armor                     Military
                                                                             College of
                                                                             Science
                                                                             (Shrivenham,
                                                                             UK)
  ------------------ ----------- ------------ ------------------ ----------- ---------------

+----------+---------+--------+------------+------------+-------------+
| Field of |         |        |            |            |             |
| I        |         |        |            |            |             |
| nterest: |         |        |            |            |             |
| Ele      |         |        |            |            |             |
| ctricity |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Category |         |        |            |            |             |
| 2:       |         |        |            |            |             |
| Intercom |         |        |            |            |             |
| parisons |         |        |            |            |             |
| agreed   |         |        |            |            |             |
| upon or  |         |        |            |            |             |
| being    |         |        |            |            |             |
| carried  |         |        |            |            |             |
| out      |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| M        | Me      | Mea    | Type and   | Comments   | Other       |
| easuring | asuring | suring | date of    |            | p           |
| quantity | range   | condi  | inter      |            | articipants |
|          |         | tions, | comparison |            |             |
|          |         | Ref    |            |            |             |
|          |         | erence |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| AC-DC    | 1000 V, | 1 kHz  | Euromet    | Completed; | LCIE        |
| Di       | 500 V   | to 100 | Project    | artifact   | (Pilot),    |
| fference |         | kHz    | 266,       | not        | AREPA, CEM, |
|          |         |        | started    | sati       | CSIR-NML,   |
|          |         | Tr     | 1994, to   | sfactory - | CSIRO-NML,  |
|          |         | ansfer | be         | may repeat | IEN, INTI,  |
|          |         | sta    | completed  | c          | KRISS, NIM, |
|          |         | ndard: | 1996, then | omparison. | NMi-VSL,    |
|          |         |        | CCE 92-4.  | Being      | NPL, NRC,   |
|          |         | Holt   |            | repeated   | OFMET, PTB, |
|          |         | Model  | Now called | now.       | SP, VNIIM   |
|          |         | 11     | CCEM-K9    |            |             |
|          |         |        |            | Complete   |             |
|          |         | For    |            |            |             |
|          |         | new    |            | Report in  |             |
|          |         | comp   |            | Progress,  |             |
|          |         | arison |            | Draft A    |             |
|          |         | K9,    |            |            |             |
|          |         | tr     |            |            |             |
|          |         | ansfer |            |            |             |
|          |         | sta    |            |            |             |
|          |         | ndards |            |            |             |
|          |         | are    |            |            |             |
|          |         | OFMET  |            |            |             |
|          |         | 1kV    |            |            |             |
|          |         | and    |            |            |             |
|          |         | NIST   |            |            |             |
|          |         | 500 V  |            |            |             |
|          |         | TVCs.  |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| AC-DC    | 10 mV   | 1 kHz  | CCEM-K11   | In         | SP (Pilot), |
| Transfer | and     | to     |            | Progress   | CSIRO-NML,  |
| Di       |         |        | 2001 to    |            | INTI, NIM,  |
| fference | 100 mV  | 1 MHz  | 2003       | NIST       | NIST,       |
|          |         |        |            | remeasured | NMi-VSL,    |
|          |         | Fluke  |            | standard   | NPL, NRC,   |
|          |         | 792A   |            | in June    | PSB, PTB,   |
|          |         |        |            | 2004.      | SP, VNIIM   |
|          |         | tra    |            |            |             |
|          |         | veling |            | Report to  |             |
|          |         | st     |            | pilot lab  |             |
|          |         | andard |            | being      |             |
|          |         |        |            | prepared.  |             |
+----------+---------+--------+------------+------------+-------------+

  ------------------ ----------- ------------- ----------------- ------------- --------------
  Field of Interest:                                                           
  Electricity                                                                  

  Category 2:                                                                  
  Intercomparisons                                                             
  agreed upon or                                                               
  being carried out                                                            
  (continued)                                                                  

  Measuring quantity Measuring   Measuring     Type and date of  Comments      Other
                     range       conditions,   intercomparison                 participants
                                 Reference                                     

  AC Voltage Ratio   Special IVD 1kHz (55 Hz   CCEM-K7           In Progress   NIST, PTB,
                     with        optional)                                     BNM-LCIE, CEM
                     tenths,                                                   CSIRO-NML,
                     elevenths &                                               ETL, IEN,
                     0.01 of 10V                                               KRISS, METAS,
                                                                               NIM, NMi-VSL,
                                                                               NPLI, NRC, SP,
                                                                               UME, VNIIM

  DC Voltage         1.018 V     Josephson     BIPM.EM-K10a      Ongoing       BIPM (Pilot),
                                 standards                                     NIST,
                                                                               BNM-LCIE, CEM,
                                                                               CSIRO-NML,
                                                                               DFM, ETL IEN,
                                                                               KRISS, MSL,
                                                                               NIM, NMi-VSL,
                                                                               NPL, NRC,
                                                                               OFMET, PTB, SP
  ------------------ ----------- ------------- ----------------- ------------- --------------

+----------+---------+--------+------------+------------+-------------+
| Field of |         |        |            |            |             |
| I        |         |        |            |            |             |
| nterest: |         |        |            |            |             |
| Ele      |         |        |            |            |             |
| ctricity |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Category |         |        |            |            |             |
| 2:       |         |        |            |            |             |
| Intercom |         |        |            |            |             |
| parisons |         |        |            |            |             |
| agreed   |         |        |            |            |             |
| upon or  |         |        |            |            |             |
| being    |         |        |            |            |             |
| carried  |         |        |            |            |             |
| out      |         |        |            |            |             |
| (co      |         |        |            |            |             |
| ntinued) |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| M        | Me      | Mea    | Type and   | Comments   | Other       |
| easuring | asuring | suring | date of    |            | p           |
| quantity | range   | condi  | inter      |            | articipants |
|          |         | tions, | comparison |            |             |
|          |         | Ref    |            |            |             |
|          |         | erence |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| DC       | Vol     | Sta    | SIM 1.2.1  | CENAM will | CENAM, NRC, |
| Voltage  | tage(s) | ndards |            | pilot this | INMETRO,    |
|          | av      | labo   | Planned    | effort     | and INTI    |
|          | ailable | ratory |            |            | are the     |
|          | on a    | cond   |            | Looking    | likely ones |
|          | p       | itions |            | for        |             |
|          | ortable |        |            | unc        |             |
|          | JVS     |        |            | ertainties |             |
|          | tr      |        |            | at 10^8^   |             |
|          | aveling |        |            | level      |             |
|          | s       |        |            |            |             |
|          | tandard |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| DC       | 10 V    | Sta    | SIM 1.2.2  | CENAM will | Many of the |
| Voltage  |         | ndards |            | pilot this | SIM labs    |
|          |         | labo   | Planned    | effort     |             |
|          |         | ratory |            |            |             |
|          |         | cond   |            | Looking    |             |
|          |         | itions |            | for        |             |
|          |         |        |            | unc        |             |
|          |         | Use of |            | ertainties |             |
|          |         | a      |            | at 10^7^   |             |
|          |         | Zener  |            | level      |             |
|          |         | diode  |            |            |             |
|          |         | -based |            |            |             |
|          |         | tra    |            |            |             |
|          |         | veling |            |            |             |
|          |         | st     |            |            |             |
|          |         | andard |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Cap      | 10 pF,  | Sta    | SIM.EM-K4, | ICE will   | NIST        |
| acitance | 100 pF  | ndards | SIM.EM-S3  | provide    | (pilot),    |
|          |         | labo   | Standards  | the        | CEMAM, ICE, |
|          |         | ratory | shipped    | logistics  | INMETRO,    |
|          |         | cond   | from NIST  | for these  | INTI, NRC,  |
|          |         | itions | 6/04       | co         | UTE         |
|          |         |        |            | mparisons, |             |
|          |         | Fused  |            | with       |             |
|          |         | silica |            | technical  |             |
|          |         | capac  |            | support    |             |
|          |         | itors; |            | provided   |             |
|          |         | 400    |            | by NIST    |             |
|          |         | Hz,    |            |            |             |
|          |         | 1000   |            |            |             |
|          |         | Hz,    |            |            |             |
|          |         | 1592   |            |            |             |
|          |         | Hz     |            |            |             |
+----------+---------+--------+------------+------------+-------------+

+----------+---------+--------+------------+------------+-------------+
| Field of |         |        |            |            |             |
| I        |         |        |            |            |             |
| nterest: |         |        |            |            |             |
| Ele      |         |        |            |            |             |
| ctricity |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Category |         |        |            |            |             |
| 2:       |         |        |            |            |             |
| Intercom |         |        |            |            |             |
| parisons |         |        |            |            |             |
| agreed   |         |        |            |            |             |
| upon or  |         |        |            |            |             |
| being    |         |        |            |            |             |
| carried  |         |        |            |            |             |
| out      |         |        |            |            |             |
| (co      |         |        |            |            |             |
| ntinued) |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| M        | Me      | Mea    | Type and   | Comments   | Other       |
| easuring | asuring | suring | date of    |            | p           |
| quantity | range   | condi  | inter      |            | articipants |
|          |         | tions, | comparison |            |             |
|          |         | Ref    |            |            |             |
|          |         | erence |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Cap      | 1000 pF | Sta    | SIM.EM.S4  | ICE will   | NIST        |
| acitance |         | ndards | Standards  | provide    | (pilot),    |
|          |         | labo   | shipped    | the        | CENAM, ICE, |
|          |         | ratory | from NIST  | logistics  | INMETRO,    |
|          |         | cond   | 6/04       | for these  | INTI, NRC,  |
|          |         | itions |            | co         | UTE         |
|          |         |        |            | mparisons, |             |
|          |         | Gas    |            | with       |             |
|          |         | diel   |            | technical  |             |
|          |         | ectric |            | support    |             |
|          |         | capac  |            | provided   |             |
|          |         | itors; |            | by NIST    |             |
|          |         |        |            |            |             |
|          |         | 1000   |            |            |             |
|          |         | Hz     |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| AC       | 120 V,  | Calib  | SIM 1.4    | NIST to    | Same set of |
| Energy   | 5 A, 50 | ration |            | pilot this | labs as for |
|          | and 60  | labo   | In         | effort     |             |
|          | Hz, 1.0 | ratory | Progress   |            | SIM 1.1     |
|          | and     | cond   |            |            |             |
|          |         | itions |            |            |             |
|          | 0.5 pF  |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| DC and   | Nominal | Calib  | SIM 1.5    | NIST to    | Same set of |
| AC       | ranges  | ration |            | pilot this | labs as for |
| Voltage  | found   | labo   | E          | effort     |             |
| and      | on five | ratory | ssentially |            | SIM 1.1     |
| Current; | f       | cond   | a repeat   |            |             |
| DC       | unction | itions | of SIM 1.1 |            |             |
| Re       | pr      |        |            |            |             |
| sistance | ecision | Used   |            |            |             |
|          | DMMs    | comm   |            |            |             |
|          |         | ercial |            |            |             |
|          |         | DMMs   |            |            |             |
+----------+---------+--------+------------+------------+-------------+

+----------+---------+--------+------------+------------+-------------+
| Field of |         |        |            |            |             |
| I        |         |        |            |            |             |
| nterest: |         |        |            |            |             |
| Ele      |         |        |            |            |             |
| ctricity |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Category |         |        |            |            |             |
| 2:       |         |        |            |            |             |
| Intercom |         |        |            |            |             |
| parisons |         |        |            |            |             |
| agreed   |         |        |            |            |             |
| upon or  |         |        |            |            |             |
| being    |         |        |            |            |             |
| carried  |         |        |            |            |             |
| out      |         |        |            |            |             |
| (co      |         |        |            |            |             |
| ntinued) |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| M        | Me      | Mea    | Type and   | Comments   | Other       |
| easuring | asuring | suring | date of    |            | p           |
| quantity | range   | condi  | inter      |            | articipants |
|          |         | tions, | comparison |            |             |
|          |         | Ref    |            |            |             |
|          |         | erence |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| AC-DC    | 1 V to  | Sta    | SIM 1.6    | A          | CENAM       |
| Transfer | 100 V   | ndards |            | bilateral  |             |
| Di       |         | labo   | Ended in   | comparison |             |
| fference |         | ratory | 2002       | between    |             |
|          |         |        |            | NIST and   |             |
|          |         | cond   |            | CENAM      |             |
|          |         | itions |            |            |             |
|          |         |        |            | Draft A is |             |
|          |         | 40 Hz  |            | in         |             |
|          |         | to 1   |            | p          |             |
|          |         | MHz    |            | reparation |             |
+----------+---------+--------+------------+------------+-------------+
| DC       | 10 kΩ   | Sta    | SIM 1.7    | Another    | CENAM       |
| Re       |         | ndards |            | bilateral  |             |
| sistance |         | labo   | Postponed  | comparison |             |
|          |         | ratory |            | between    |             |
|          |         | cond   |            | NIST and   |             |
|          |         | itions |            | CENAM      |             |
|          |         |        |            |            |             |
|          |         | Compa  |            |            |             |
|          |         | risons |            |            |             |
|          |         | with   |            |            |             |
|          |         | QHR    |            |            |             |
|          |         | s      |            |            |             |
|          |         | ystems |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| AC-DC    | 3V      | Sta    | SIM 1.9    | CENAM to   | Many of the |
| Transfer |         | ndards |            | pilot this | SIM labs    |
| Di       |         | labo   | Underway   | effort     |             |
| fference |         | ratory |            |            |             |
|          |         | cond   |            | Would      |             |
|          |         | itions |            | match the  |             |
|          |         |        |            | points     |             |
|          |         | 1 kHz  |            | used for   |             |
|          |         | to     |            | CCEM-K6a,  |             |
|          |         |        |            | CCEM-K11,  |             |
|          |         | 1 MHz  |            | and        |             |
|          |         |        |            | CCEM-K9,   |             |
|          |         | Fluke  |            | NIST       |             |
|          |         | 792A   |            | me         |             |
|          |         | tr     |            | asurements |             |
|          |         | ansfer |            | complete   |             |
|          |         | st     |            | and        |             |
|          |         | andard |            | reported.  |             |
+----------+---------+--------+------------+------------+-------------+

+----------+---------+--------+------------+------------+-------------+
| Field of |         |        |            |            |             |
| I        |         |        |            |            |             |
| nterest: |         |        |            |            |             |
| Ele      |         |        |            |            |             |
| ctricity |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Category |         |        |            |            |             |
| 2:       |         |        |            |            |             |
| Intercom |         |        |            |            |             |
| parisons |         |        |            |            |             |
| agreed   |         |        |            |            |             |
| upon or  |         |        |            |            |             |
| being    |         |        |            |            |             |
| carried  |         |        |            |            |             |
| out      |         |        |            |            |             |
| (co      |         |        |            |            |             |
| ntinued) |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| M        | Me      | Mea    | Type and   | Comments   | Other       |
| easuring | asuring | suring | date of    |            | p           |
| quantity | range   | condi  | inter      |            | articipants |
|          |         | tions, | comparison |            |             |
|          |         | Ref    |            |            |             |
|          |         | erence |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| High     | 100     | Sta    | S SIM 1.10 | NNRC to    | Many of the |
| Voltage  | kV/10 V | ndards |            | pilot this | SIM labs    |
| DC       |         | labo   | Proposed   | effort     |             |
|          |         | ratory |            |            |             |
|          |         | cond   |            |            |             |
|          |         | itions |            |            |             |
|          |         |        |            |            |             |
|          |         | HV DC  |            |            |             |
|          |         | d      |            |            |             |
|          |         | ivider |            |            |             |
|          |         | as the |            |            |             |
|          |         | tra    |            |            |             |
|          |         | veling |            |            |             |
|          |         | st     |            |            |             |
|          |         | andard |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| DC       | 10 V    |        | CCEM-K11B  | Ongoing -  | BIPM        |
| Voltage  |         |        |            | a long     | (Pilot),    |
|          |         |        | 1992 -     | list of    | BEV, CMI,   |
|          |         |        |            | bilateral  | EOLAS, GUM, |
|          |         |        |            | c          | INETI,      |
|          |         |        |            | omparisons | NIST, NML   |
|          |         |        |            |            | (IE),       |
|          |         |        |            |            | OFMET, PSB, |
|          |         |        |            |            | SMU         |
+----------+---------+--------+------------+------------+-------------+
| DC       | 10 V    |        | 1999 NCSL  | NORAMET    | NIST-G and  |
| voltage  |         |        | JVS        | (probably  | other 15-16 |
|          |         |        | inter      | SIM)       | labs in     |
|          |         |        | comparison |            | U.S., N.    |
|          |         |        |            |            | America     |
|          |         |        |            |            | (maybe S.   |
|          |         |        |            |            | America)    |
+----------+---------+--------+------------+------------+-------------+
| DC       | 10 V    |        | 11/98:     |            | NIST-G,     |
| voltage  |         |        | travelling |            | BIPM        |
|          |         |        | Zeners     |            |             |
|          |         |        | measured   |            |             |
|          |         |        | with JVS   |            |             |
+----------+---------+--------+------------+------------+-------------+

+----------+---------+--------+------------+------------+-------------+
| Field of |         |        |            |            |             |
| I        |         |        |            |            |             |
| nterest: |         |        |            |            |             |
| Ele      |         |        |            |            |             |
| ctricity |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Category |         |        |            |            |             |
| 2:       |         |        |            |            |             |
| Intercom |         |        |            |            |             |
| parisons |         |        |            |            |             |
| agreed   |         |        |            |            |             |
| upon or  |         |        |            |            |             |
| being    |         |        |            |            |             |
| carried  |         |        |            |            |             |
| out      |         |        |            |            |             |
| (co      |         |        |            |            |             |
| ntinued) |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| M        | Me      | Mea    | Type and   | Comments   | Other       |
| easuring | asuring | suring | date of    |            | p           |
| quantity | range   | condi  | inter      |            | articipants |
|          |         | tions, | comparison |            |             |
|          |         | Ref    |            |            |             |
|          |         | erence |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| RF - DC  | 1.3 V   | 1 -    | CCEM-92-06 | Most       | VSL         |
| Transfer |         | 300    |            | results    | (Pilot),    |
|          |         | MHz    |            | will come  | many other  |
|          |         |        |            | from       | labs        |
|          |         | (500,  |            | Boulder,   |             |
|          |         | 700,   |            | Ga         |             |
|          |         |        |            | ithersburg |             |
|          |         | 1000   |            | will       |             |
|          |         | MHz    |            | provide 1  |             |
|          |         | opt    |            | MHz (and   |             |
|          |         | ional) |            | maybe up   |             |
|          |         |        |            | to 10 MHz  |             |
|          |         |        |            | data)      |             |
+----------+---------+--------+------------+------------+-------------+
| Voltage  | 1 V     | 1 to   | GT-RF 92-6 | Report In  | NMi-VSL     |
|          |         | 300    |            | progress   | (Pilot),    |
|          |         | MHz    | CCEM.      |            | PTB, NRC,   |
|          |         |        | RF-K4.a.CL |            | NPL, IEN,   |
|          |         |        |            |            |             |
|          |         |        |            |            | BNM-LNE     |
+----------+---------+--------+------------+------------+-------------+
| S-P      | Type N  | 2-18   | GT-RF 92-3 | In         | NPL         |
| arameter |         | GHz    |            | progress   | (Pilot),    |
|          |         |        | CCEM.      |            | NML, ETL,   |
|          |         |        | RF-K5.b.CL |            | IEN,        |
|          |         |        |            |            | BNM-LNE,    |
|          |         |        |            |            | NRC, PTB,   |
|          |         |        |            |            | SPTT, VSL   |
+----------+---------+--------+------------+------------+-------------+
| S-P      | GPC-3.5 | 50 MHz | GT-RF 97-1 | Postponed  | BNM-LNE,    |
| arameter |         | -      |            |            | CMI,        |
|          |         |        | CCEM.      |            | CSIR-NML,   |
|          |         | 26.5   | RF-K5.c.CL |            | CSIRO-NML,  |
|          |         | GHz    |            |            | IEN, INTA,  |
|          |         |        |            |            | KRISS,      |
|          |         |        |            |            | METAS,      |
|          |         |        |            |            | MIKES, NIM, |
|          |         |        |            |            | NST,        |
|          |         |        |            |            | NMi-VSL,    |
|          |         |        |            |            | PL, NRC,    |
|          |         |        |            |            | PTB, SNIIM, |
|          |         |        |            |            | SPRING      |
+----------+---------+--------+------------+------------+-------------+
| Noise    | Coax    | 30, 60 | GT-RF 00-1 | Report in  | NPL, NIST,  |
| Power    | GPC-7   | MHz    |            | Progress   | BNM-LCIE,   |
|          |         | and 1  | CCEM       |            | VNIIFTR     |
|          |         | GHz    | .RF-K18.CL |            |             |
+----------+---------+--------+------------+------------+-------------+

+----------+---------+--------+------------+------------+-------------+
| Field of |         |        |            |            |             |
| I        |         |        |            |            |             |
| nterest: |         |        |            |            |             |
| Ele      |         |        |            |            |             |
| ctricity |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Category |         |        |            |            |             |
| 2:       |         |        |            |            |             |
| Intercom |         |        |            |            |             |
| parisons |         |        |            |            |             |
| agreed   |         |        |            |            |             |
| upon or  |         |        |            |            |             |
| being    |         |        |            |            |             |
| carried  |         |        |            |            |             |
| out      |         |        |            |            |             |
| (co      |         |        |            |            |             |
| ntinued) |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| M        | Me      | Mea    | Type and   | Comments   | Other       |
| easuring | asuring | suring | date of    |            | p           |
| quantity | range   | cond   | inter      |            | articipants |
|          |         | itions | comparison |            |             |
+----------+---------+--------+------------+------------+-------------+
| Att      | Type    | 60 MHz | GT-RF 00-2 | In         | NPL,        |
| enuation | N -     | and 5  |            | Progress   | BNM-LNE     |
|          | Step    | GHz    | CCEM       |            |             |
|          |         |        | .RF-K19.CL |            | CSIR-NIM,   |
|          | Att     |        |            |            | ETL, IRN,   |
|          | enuator |        |            |            | NIM, NIST,  |
|          |         |        |            |            | NMi-VSL,    |
|          |         |        |            |            | NPL, NRC,   |
|          |         |        |            |            | METAS, PSB, |
|          |         |        |            |            | UMI,        |
|          |         |        |            |            | VNIIFTR     |
+----------+---------+--------+------------+------------+-------------+
| Power    | Coax,   | 1-18   | GT-RF 98-1 | Report in  | NMI-VSL,    |
|          | Type N  | Ghz    |            | Progress   | BNM-LNE,    |
|          |         |        | CCE        |            | CSIR,       |
|          |         |        | M.RF-K8.CL |            | CSIRO-NML,  |
|          |         |        |            |            | KRISS, NIM, |
|          |         |        |            |            | ETL, INTA,  |
|          |         |        |            |            | NPL, METAS, |
|          |         |        |            |            | NRC, PSB,   |
|          |         |        |            |            | PTB         |
+----------+---------+--------+------------+------------+-------------+
| Noise    | WR-62   | 12.4,  | GT-RF 99-1 | Report in  | BNM-LNE,    |
| Power    |         | 13.5,  |            | Progress   | NIST, NPL,  |
|          |         | 15,    | CCEM.RF-K9 |            | PTB,        |
|          |         | 17.5,  |            |            | VNIFTRI     |
|          |         | 18 Ghz |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Power    | 3.5 mm  | 50     | GT-RF 99-2 | Report in  | PTB,        |
|          |         | MHz-   |            | Progress   | Nmi-VSL,    |
|          |         |        | CCEM       |            | NIST,       |
|          |         | 26.5   | .RF-K10.CL |            | BNM-LNE,    |
|          |         | GHz    |            |            | CSIR        |
|          |         |        |            |            |             |
|          |         |        |            |            | CSIRO-NML,  |
|          |         |        |            |            | IEN, ETL,   |
|          |         |        |            |            | NPL, NRC,   |
|          |         |        |            |            | METAS, PSB, |
|          |         |        |            |            | VNIFTR      |
+----------+---------+--------+------------+------------+-------------+
| Antenna  | Tunable | 30 &   | CCE        | In         | NPL, ARCS,  |
| Factor   | Dipole  | 900    | M.RF-K21.F | Progress   | BNM-LNE,    |
|          | Antenna | MHz    |            |            | IEN, ITRI,  |
|          |         |        | GT         |            | KRISS, NIM, |
|          |         |        | -RF-2001-1 |            | NIST, NMIJ, |
|          |         |        |            |            | NPL, UME,   |
|          |         |        |            |            | VNIIFTRI    |
+----------+---------+--------+------------+------------+-------------+

+----------+---------+--------+------------+------------+-------------+
| Field of |         |        |            |            |             |
| I        |         |        |            |            |             |
| nterest: |         |        |            |            |             |
| Ele      |         |        |            |            |             |
| ctricity |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| Category |         |        |            |            |             |
| 2:       |         |        |            |            |             |
| Intercom |         |        |            |            |             |
| parisons |         |        |            |            |             |
| agreed   |         |        |            |            |             |
| upon or  |         |        |            |            |             |
| being    |         |        |            |            |             |
| carried  |         |        |            |            |             |
| out      |         |        |            |            |             |
| (co      |         |        |            |            |             |
| ntinued) |         |        |            |            |             |
+----------+---------+--------+------------+------------+-------------+
| M        | Me      | Mea    | Type and   | Comments   | Other       |
| easuring | asuring | suring | date of    |            | p           |
| quantity | range   | cond   | inter      |            | articipants |
|          |         | itions | comparison |            |             |
+----------+---------+--------+------------+------------+-------------+
| Power    | 2.4 mm  | 2-50   | CCE        | In         | NIST        |
|          |         | Ghz    | M.RF-S1.CL | Progress   | (pilot),    |
|          |         |        |            |            | CSIR-NML,   |
|          |         |        |            |            | CSIRO-NML,  |
|          |         |        |            |            | METAS,      |
|          |         |        |            |            | NMIJ,       |
|          |         |        |            |            | NMi-VSL,    |
|          |         |        |            |            | NPL, NRC,   |
|          |         |        |            |            | KRISS       |
+----------+---------+--------+------------+------------+-------------+
| Antenna  | Various | 30 MHz | CCE        | In         | NPL, ARCS,  |
| Factor   |         | -2 GHz | M.RF-S21.F | Progress   | BNM-LNE,    |
|          |         |        |            |            | IEN, ITRI,  |
|          |         |        | GT         |            | KRISS,      |
|          |         |        | -RF-2001-1 |            | METAS, NIM, |
|          |         |        |            |            | NIST, NMIJ, |
|          |         |        |            |            | NMi-VSL,    |
|          |         |        |            |            | SP, UME,    |
|          |         |        |            |            | VNIIFTRI    |
+----------+---------+--------+------------+------------+-------------+
| Sc       | 2.4 mm  | 0.05 - | EUROMET    | Report in  | METAS,      |
| attering |         | 50 Ghz | .EM.RF-S16 | Progress   | Agilent-UK, |
| Pa       |         |        |            |            | CSIR-NML,   |
| rameters |         |        |            |            | IEN, INTA,  |
|          |         |        |            |            | METAS,      |
|          |         |        |            |            | NIST,       |
|          |         |        |            |            | NMi-VSL,    |
|          |         |        |            |            | NPL, NRC    |
+----------+---------+--------+------------+------------+-------------+
| Di       | 1 MHz   | Va     | Euromet    |            | NPL (pilot) |
| electric | to      | riable | 685        |            | NIST, Univ. |
| Qu       |         | Temper | Dielectric |            | Warsaw,     |
| antities | 100 GHz | atures | Me         |            | SNIM &      |
|          |         |        | asurements |            | VNIIFTRI    |
+----------+---------+--------+------------+------------+-------------+

+----------+---------+--------+------------+------------+------------+
| Field of |         |        |            |            |            |
| I        |         |        |            |            |            |
| nterest: |         |        |            |            |            |
| Optics   |         |        |            |            |            |
+----------+---------+--------+------------+------------+------------+
| Category |         |        |            |            |            |
| 2:       |         |        |            |            |            |
| Intercom |         |        |            |            |            |
| parisons |         |        |            |            |            |
| agreed   |         |        |            |            |            |
| upon or  |         |        |            |            |            |
| being    |         |        |            |            |            |
| carried  |         |        |            |            |            |
| out      |         |        |            |            |            |
+----------+---------+--------+------------+------------+------------+
| M        | Me      | Mea    | Type and   | Comments   | Other      |
| easuring | asuring | suring | date of    |            |            |
| quantity | range   | cond   | inter      |            | pa         |
|          |         | itions | comparison |            | rticipants |
+----------+---------+--------+------------+------------+------------+
| Optical  | 1300    | Fiber  | 2001-02    | Using trap | PTB        |
| Fiber    | and     | c      |            | detector   |            |
| Power    |         | oupled |            | transfer   |            |
|          | 1550 nm | input  |            | standard   |            |
|          |         |        |            |            |            |
|          |         |        |            | Submitted  |            |
|          |         |        |            | to         |            |
|          |         |        |            | Me         |            |
|          |         |        |            | trologia - |            |
|          |         |        |            | August     |            |
|          |         |        |            | 2002       |            |
+----------+---------+--------+------------+------------+------------+
| Raman    | Roughly | 1480 & | TIA        | NIST       | 5 other    |
| Gain     |         | 1490   | initiated  | co         | la         |
| Ef       | 15      | nm     | 2001       | ordination | boratories |
| ficiency | 00-1650 |        |            | and data   | including  |
| of       | nm      | pump   | Underway   | analysis;  | 2 Canadian |
| sin      |         | wavele | 2002       | NIST       | and 1      |
| gle-mode |         | ngths; |            | me         | European   |
| fibers   |         | v      |            | asurements |            |
|          |         | arious |            |            |            |
|          |         | fiber  |            |            |            |
|          |         | types  |            |            |            |
+----------+---------+--------+------------+------------+------------+
| Sin      | 1300    | Comp   | Euromet    | NIST       | CSIG, HUT, |
| gle-mode | and     | arison | initiated  | me         | METAS, NPL |
| optical  | 1550 nm | of     | 2002       | asurements |            |
| fiber    | regions | Chr    |            | Int        |            |
| C        |         | omatic |            | ernational |            |
| hromatic |         | Disp   |            | (European) |            |
| Di       |         | ersion |            | comparison |            |
| spersion |         | Ref    |            |            |            |
|          |         | erence |            |            |            |
|          |         | F      |            |            |            |
|          |         | ibers, |            |            |            |
|          |         | v      |            |            |            |
|          |         | arious |            |            |            |
|          |         | fiber  |            |            |            |
|          |         | types  |            |            |            |
|          |         | and    |            |            |            |
|          |         | measu  |            |            |            |
|          |         | rement |            |            |            |
|          |         | m      |            |            |            |
|          |         | ethods |            |            |            |
+----------+---------+--------+------------+------------+------------+
| Ac-dc    | Ac-dc   | NME    | CCEM-K12   | In         | In         |
| Di       | current | t      |            | planning,  | Planning   |
| fference | at 10   | hermal |            | NIST       |            |
|          | mA and  | c      |            | assisted   |            |
|          | 5 A, 10 | urrent |            | in         |            |
|          | Hz to   | conv   |            | es         |            |
|          | 100 kHz | erters |            | tablishing |            |
|          |         |        |            | the        |            |
|          |         |        |            | reference  |            |
|          |         |        |            | value.     |            |
+----------+---------+--------+------------+------------+------------+