SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017& ANSI/NCSL Z540-1-1994
VACUUM TECHNOLOGY, INC.
1003 Alvin Weinberg Drive
Oak Ridge, TN 37830
Carl Von Buelow
Phone: 865 481 3342
CALIBRATION
Valid To: February 28, 2025

Certificate Number: 1707.01

In recognition of the successful completion of the A2LA evaluation process, accreditation is granted to thislaboratory to perform the following calibrations1, 5:
I. Fluid Quantities
Range

Parameter/Equipment

CMC2, 3, 4 ()Comments

Gas Flow Rate –Measuring Equipment
All Gases

Helium andHydrogen Only

Nitrogen Only

(1×10-9 to 1×10-3) atm∙cm3/s

4.5 %Primary calibration
systems(1×10-6 to 100) atm∙cm3/s

4.3 %Large leak calibration
system(1×10-10 to 2×10-3) atm∙cm3/s

5%

Automated mass
spectrometercomparison calibration
system(1×10-5 to 1×10-1) atm∙cm3/s

10 %Sniffer leak detector(1×10-10 to 1×10-3) atm∙cm3/s

12 %Manual mass
spectrometercomparison calibration
system(1×10-9 to 3×10-5) atm∙cm3/s

3.5 %Primary calibration
system(A2LA Cert. No. 1707.01) 01/20/2023

Page 1 of 2Range

Parameter/Equipment

CMC2, 3, 4 ()Comments

Vacuum Gauges –All Gases

1×10-3 torr to 3000 psig

2.5 %VGMS w/ capacitancemanometer staticcomparison(1×10-7 to 1×10-3) torr

5%

VGMS w/ spinning
rotor gauge dynamic
comparison

10 cc to 25 L

2.5 %Large leak calibration
system with gas
expansion method

Volume – Measuring
Equipment
Nitrogen____________________________________________
1

This laboratory offers commercial calibration service.

2Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurementthat a laboratory can achieve within its scope of accreditation when performing more or less routine
calibrations of nearly ideal measurement standards or nearly ideal measuring equipment. CMCs represent
expanded uncertainties expressed at approximately the 95 % level of confidence, usually using a coveragefactor of k = 2. The actual measurement uncertainty of a specific calibration performed by the laboratory
may be greater than the CMC due to the behavior of the customer’s device and to influences from thecircumstances of the specific calibration.

3

In the statement of CMC, percentages are to be read as percent of reading unless otherwise noted.

4

The type of instrument or material being calibrated is defined by the parameter. This indicates thelaboratory is capable of calibrating instruments that measure or generate the values in the ranges indicatedfor the listed measurement parameter.

5This scope meets A2LA’s P112 Flexible Scope Policy.

(A2LA Cert. No. 1707.01) 01/20/2023

Page 2 of 2

Accredited Laboratory
A2LA has accredited

VACUUM TECHNOLOGY, INC.
Oak Ridge, TNfor technical competence in the field ofCalibration
This laboratory is accredited in accordance with the recognized International Standard ISO/IEC 17025:2017 General
requirements for the competence of testing and calibration laboratories. This laboratory also meets the requirements of ANSI/NCSL
Z540-1-1994 and R205 – Specific Requirements: Calibration Laboratory Accreditation Program. This accreditation demonstrates
technical competence for a defined scope and the operation of a laboratory quality management system(refer to joint ISO-ILAC-IAF Communiqué dated April 2017).

Presented this 20th day of January 2023.

_______________________
Vice President, Accreditation Services
For the Accreditation Council
Certificate Number 1707.01
Valid to February 28, 2025
For the calibrations to which this accreditation applies, please refer to the laboratory’s Calibration Scope of Accreditation.