The Fredericks Company

(A2LA Cert. No. 7104.01) 9/16/2025 Page 1 of 1 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 THE FREDERICKS COMPANY 2400 Philmont Ave Huntingdon Valley, PA 19006 Carl Lee Phone: 215 947 2500 CALIBRATION Valid To: October 31, 2027 Certificate Number: 7104.01 In recognition of the successful completion of the A2LA evaluation process (including an assessment of the organization’s compliance with R205 – A2LA’s Calibration Program Requirements), accreditation is granted to this laboratory to perform the following calibrations 1: I. Mechanical Parameter/Equipment Range CMC2, 3 (±) Comments Pressure – Calibration of Vacuum Gauges (1E1 to 1E3) torr (1E-1 to 1E1) torr (1E-2 to 1E-1) torr (1E-3 to 1E-2) torr (1E-4 to 1E-3) torr (1E-5 to 1E-4) torr (1E-6 to 1E-5) torr 1.5 % - 3.6E-2 torr 1.3 % + 1.6E-3 torr 1.1 % + 2.2E-4 torr 1.9 % + 5.1E-4 torr 3.9 % - 4.0E-7 torr 3.5 % + 8.8E-9 torr 3.4 % + 1.8E-8 torr Comparison method using spinning rotor gauge, ion gauge, or capacitance diaphragm gauge _________________________________ 1 This laboratory offers commercial calibration service. 2 Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurement that 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 coverage factor 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 the circumstances of the specific calibration. 3 In the statement of CMC, percentages are percentage of reading, unless otherwise indicated.