LACO Technologies

(A2LA Cert. No. 1530.01) Revised 02/06/2025 Page 2 of 2 II. Mechanical Parameter/Equipment Range (Torr) CMC2, 4 (±) Comments Pressure (Calibration of Vacuum Gauges) (2 × 10-2) to 1000 (1 × 10-3) to (2 × 10-2) (1 × 10-4) to (1 × 10-3) (5 × 10-6) to (1 × 10-4) (1 × 10-7) to (5 × 10-6) 1.0 % 2.0 % 5.1 % 7.1 % 8.0 % Comparison method using spinning rotor gauge, high-accuracy ion gauge, or capacitance manometer _________________________________________________________ 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, the value is defined as the percentage of leak rate. 4 In the statement of CMC, the percent is defined as the percentage of reading. 5 This scope meets A2LA’s P112 Flexible Scope Policy.