**IR 6969 Revisions Since March 2003 Publication**

**NOTE:** GMP 14 was provided on the original CD-ROM, in Word and Adobe
PDF on the website in March 2003, but was missing in the original
printed version provided in March 2003. Subsequent printed versions that
have been used in seminars have included the printed version of GMP 14.

**Revisions July 2003**

*SOP 4*

An error was corrected in the example on p. 15 to 16. The negative sign
for 0.126 mg and 0.126 49 mg was missing in the March version. The
calculated C~x~ value should be -0.126 49 mg and the rounded value
-0.126 mg.

*SOP 8*

The wording was clarified in sections 2.4.3, 2.5.3, 2.6.2, 3.2, to
clarify that the "sensitivity error" refers to the error in the nominal
mass of a division. In section, 2.5.7, the following underlined clause
was inserted: no more than 10 [without rechecking the
standard.]{.underline}

**Revisions December 2003**

*GLP 4*

The reference to NIST Handbook 130 was corrected from section 6 to
section 12 (2004 version).

*SOP 4*

Table I, Echelon III was updated to reflect environmental criteria given
in NIST Handbook 143, Program Handbook, 2003. (Temperature range was
extended to 27 C, maximum change per hour was increased to 2 C, and
relative humidity limits were changed to allow ± 20 % / 4 h.

*SOP 7*

Table I, Echelon III was updated to reflect environmental criteria given
in NIST Handbook 143, Program Handbook, 2003. (Temperature range was
extended to 27 C, maximum change per hour was increased to 2 C, and
relative humidity limits were changed to allow ± 20 % / 4 h. Subscripts
for the tare weights on the check standard on the datasheets were
changed from t~x~ to t~Sc~.

*SOP 8*

Table I, Echelon III was updated to reflect environmental criteria given
in NIST Handbook 143, Program Handbook, 2003. (Temperature range was
extended to 27 C, maximum change per hour was increased to 2 C, and
relative humidity limits were changed to allow ± 20 % / 4 h.

*SOP 30*

A space was added to the first sentence in section 1.2.2., between the
words be calibrated.

*Section 8, Statistical Techniques*

*Section 8.6*

The Greek letter sigma () replaced the incorrect variable "s" in the
table as the known standard deviation. NBS replaced NIST in the
references to Handbook 91 because this reference was originally
published by NBS.

*Section 9, Reference Tables*

*Table 9.1*

An infinity symbol has been inserted in place of the number "4" which
printed in the first column, last row. Formatting of the $d_{2}^{}$
notation was edited. The Greek letter nu ($\upsilon$) was inserted in
the text below the table where it was inadvertently omitted. The
formatting of the © symbol was corrected.

Table 9.2

The values for the confidence levels noted for 100 should be 99.999 to
the level noted in the original. E.g., 100 -- 10^-9^ is: 99.999 999 99.
A comma was used in IR 6969 instead of the minus sign. This has been
corrected.

*Table 9.3*

A space was inserted between the number and percent symbol in the first
row according to NIST SP 811. NBS replaced NIST in the references
because these references were originally published by NBS. An infinity
symbol was inserted in the first column, last row where it was missing.

*Table 9.4*

The n1 value was moved to the right side of the diagonal slash mark to
indicate the degrees of freedom for the numerator. All numbers in the
column for 20 degrees of freedom from 4 degrees of freedom in the
denominator to infinity were incorrectly referencing the same values in
the column for 8 degrees of freedom. All values have been corrected.

*Table 9.6*

The Greek letter gamma ($\gamma$) was missing in the first row heading
before the equal sign. NBS replaced NIST in the reference because this
reference was originally published by NBS.

*Table 9.7*

NBS replaced NIST in the reference because this reference was originally
published by NBS.

The font for the Greek letter alpha on p. 9 of 13 (Table 9.7, Part 2)
was increased to match the other font sizes.

*Table 9.8*

The density for 16.9 C was corrected from 0.997 890 g/cm^3^ to 0.998 790
g/cm^3^ . The sentence:

'Reference equations for Air-Saturated distilled water may be used.' was
changed to: 'Reference equations for Air-Saturated [or
Air-Free]{.underline} distilled water may be used [but reference source
should be noted]{.underline}.'

*Table 9.11*

NBS replaced NIST in the reference because this reference was originally
published by NBS.