Vitrek

(A2LA Cert. No. 3678.01) 2/7/2025 Page 2 of 4 Parameter/Equipment Range CMC2, 3 (±) Comments DC Current – Measure (0 to 0.1) mA (0.1 to 1) mA (1 to 10) mA (10 to 100) mA (100 to 1000) mA 33 µA/A + 900 pA 31 µA/A + 6 nA 31 µA/A + 60 nA 48 µA/A + 600 nA 0.013 % + 12 µA HP 3458A Resistance – Generate, Fixed Points 0.05 Ω 0.100 Ω 1.0 Ω 10.0 Ω 100.0 Ω 1.0 kΩ 10.0 kΩ 100.0 kΩ 1.0 MΩ 5.0 MΩ 10.0 MΩ 100.0 MΩ 1.0 GΩ 0.066 % 0.072 % 0.066 % 37 µΩ/Ω 28 µΩ/Ω 24 µΩ/Ω 0.018 % 84 µΩ/Ω 38 µΩ/Ω 63 µΩ/Ω 0.014 % 0.021 % 0.06 % (IET HARS-LX-1) Decade BOC) Vitrek 0.05 Ω Vitrek SR502 Vitrek SR502 Vitrek 10 Ω ESI R925C Vitrek 1 kΩ Vitrek 10 k Vitrek 4610 Vitrek 4610 Vitrek CAL 5M Vitrek 4610 Vitrek 4610 Vitrek 4610 Resistance – Measure Up to 10 Ω (10 to 100) Ω 100 Ω to 1 kΩ (1 to 10) kΩ (10 to 100) kΩ 100 kΩ to 1 MΩ (1 to 10) MΩ (10 to 100) MΩ 100 MΩ to 1 GΩ 0.015 % + 50 µΩ 21 µΩ/Ω + 500 µΩ 14 µΩ/Ω + 500 µΩ 14 µΩ/Ω + 5 mΩ 14 µΩ/Ω + 50 mΩ 20 µΩ/Ω + 2.0 Ω 90 µΩ/Ω + 100 Ω 0.073 % + 1 kΩ 0.62 % + 10 kΩ HP 3458A

(A2LA Cert. No. 3678.01) 2/7/2025 Page 3 of 4 Parameter/Range Frequency CMC2, 3 (±) Comments AC Voltage – Generate Up to 23 V (23 to 45) V (45 to 90) V (90 to 180) V (180 to 360) V (360 to 650) V (650 to 1008) V 50 Hz 50, 100 or 400 Hz 1.7 mV 4.0 mV 6.5 mV 13 mV 33 mV 61 mV 95 mV Fluke 6105A AC Voltage – Measure (0 to 100) mV (0.1 to 1) V (1 to 10) V (10 to 100) V (1 to 10) kV (10 to 30) kV (30 to 50) kV (50 to 70) kV 40 Hz to 1 kHz 40 Hz to 20 kHz (20 to 50) kHz (50 to 100) kHz (50 to 60) Hz 83 µV/V + 2.0 µV 83 µV/V + 20 µV 83 µV/V + 2.0 mV 0.024 % + 2.0 mV 0.041 % + 2.0 mV 0.14 % + 2.0 mV 0.028 % 0.019 % 0.016 % 0.022 % HP 3458A Vitrek 4710 ratiometric transfer standard with HP3458A AC Current – Generate Up to 0.1 A (0.1 to 1.0) A (1.0 to 10.0) A (10.0 to 20.0) A (20.0 to 40.0) A (50 to 60) Hz 71 µA/A + 2.5 µA 69 µA/A + 10 µA 74 µA/A + 100 µA 73 µA/A + 200 µA 73 µA/A + 500 µA Fluke 6105A

(A2LA Cert. No. 3678.01) 2/7/2025 Page 4 of 4 Parameter/Range Frequency CMC2, 3 (±) Comments AC Current – Measure (0 to 0.1) mA (0.1 to 1.0) mA (1.0 to 10.0) mA (10.0 to 100.0) mA (100.0 to 1000.0) mA (1 to 20) A (20 to 40) A (45 to 100) Hz (45 to 100) Hz 0.14 % + 0.03 µA 0.07 % + 0.2 µA 0.072 % + 2.0 µA 0.072 % + 20 µA 0.095 % + 200 µA 0.26 % 0.78 % HP 3458A HP 3458A with 50 mΩ shunt _____________________________ 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 The measurands stated are generated using the indicated instrument (see Comments). This capability is suitable for the calibration of the devices intended to measure the measuran d in the ranges indicated. CMCs are expressed as either a specific value that covers the full range or as a fraction /percent of the reading plus a fixed floor specification. 4 This scope meets A2LA’s P112 Flexible Scope Policy.