Guildline Instruments

(A2LA Cert. No. 2906.01) 3/24/2026 Page 3 of 5 Parameter/Equipment Range CMC2, 3, 4, 6 (±) Comments High Resistance – Generate and Measure Resistance Ranges Fixed Decade Points 100 kΩ to 1 MΩ (1 to 10) MΩ (10 to 100) MΩ 100 MΩ to 1 GΩ (1 to 10) GΩ (10 to 100) GΩ 100 GΩ to 1 TΩ (1 to 10) TΩ (10 to 100) TΩ 100 TΩ to 1 PΩ (1 to 10) PΩ 100 kΩ 1 MΩ 10 MΩ 100 MΩ 1 GΩ 10 GΩ 100 GΩ 1 TΩ 10 TΩ 100 TΩ 1 PΩ 10 PΩ 50 µΩ/Ω 12 µΩ/Ω 12 µΩ/Ω 15 µΩ/Ω 50 µΩ/Ω 70 µΩ/Ω 100 µΩ/Ω 190 µΩ/Ω 800 µΩ/Ω 0.80 % 8.0 % 50 µΩ/Ω 12 µΩ/Ω 12 µΩ/Ω 12 µΩ/Ω 15 µΩ/Ω 50 µΩ/Ω 70 µΩ/Ω 100 µΩ/Ω 190 µΩ/Ω 800 µΩ/Ω 0.80 % 8.0 % Substitution of electrical resistance standards, using Guildline Teraohmmeter 6520 or 6530-XPR/C The uncertainties are based on the typical applied voltage is 1000 V for values 100 GΩ to 10 PΩ, 100 V for 10 GΩ, 10 V for 1 GΩ and 1 V for 100 MΩ down to 100 kΩ. Voltages outside the typical are available for most resistance values note that the uncertainties outside the typical voltages at high values may also depend on applied voltage (1 V to 1000 V) The above conditions are applied in both fixed decade points and resistance ranges. DC Voltage – Generate (10 to 220) mV 200 mV to 2.2 V (2.2 to 11) V (11 to 22) V (22 to 220) V (220 to 1100) V 15 µV/V + 0.51 µV 8.8 µV/V + 0.90 µV 6.3 µV/V + 4.0 µV 6.3 µV/V + 6.0 µV 9.0 µV/V + 60 µV 13 µV/V + 600 µV Generate voltage using calibrator: Fluke 5720A DC Voltage – Measure (10 to 200) mV 200 mV to 2 V (2 to 20) V (20 to 200) V (200 to 1000) V 7.6 µV/V + 0.12 µV 5.0 µV/V + 0.51 µV 5.0 µV/V + 5.1 µV 7.5 µV/V + 51 µV 7.6 µV/V + 610 µV Direct measurement of voltage using DMM: Fluke 8508A

(A2LA Cert. No. 2906.01) 3/24/2026 Page 4 of 5 Parameter/Equipment Range CMC2, 3, 4, 6 (±) Comments DC Current – Generate 100 fA 1 pA 10 pA 100 pA 1 nA 10 nA 100 nA 1 µA 10 µA 2.0 % 0.20 % 0.20 % 500 µA/A 300 µA/A 300 µA/A 150 µA/A 150 µA/A 150 µA/A Generate low current through calibrator (Fluke 5720A) DC voltage stimulus over reference resistance value Uncertainties are based on applied voltage and resistance value used DC Current – Measure (0.1 to 1) pA (1 to 10) pA (10 to 100) pA 100 pA to 1 nA (1 to 10) nA (10 to 100) nA 100 nA to 1 µA (1 to 10) µA 10 µA to 100 nA 100 nA to 1 µA (1 to 10) µA (10 to 100) µA 100 µA to 1 mA (1 to 10) mA (10 to 100) mA 100 mA to 1 A 3.0 % 0.50 % 0.10 % 650 µA/A 400 µA/A 250 µA/A 200 µA/A 150 µA/A 39 µA/A + 50 pA 29 µA/A + 50 pA 29 µA/A + 110 pA 28 µA/A + 900 pA 28 µA/A + 6 nA 28 µA/A + 60 nA 44 µA/A + 600 nA 130 µA/A + 11 µA Direct measurement of low DC current using Teraohmeter Guildline 6520 or 6530-XPR/C Direct measurement of DC current using DMM: Keysight/Agilent 3458A _______________ 1 This laboratory offers commercial calibration service. 2 Calibration and Measurement Capability (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 Where ranges are not specified, CMC stated is for the cardinal points only. 4 In the statement of CMC, the value is defined as the percentage of reading.

(A2LA Cert. No. 2906.01) 3/24/2026 Page 5 of 5 5 The stated uncertainties refer to negligible power dissipation. Resistors with significant power dissipation can be measured at voltages up to 1000 V and currents up to 1000 A with uncertainties in the range (3 to 300) x 10-6. Resistors of modest dimensions suitable for oil immersion can be measured in the range from (20 to 28) °C. Resistors which are not oil immersible, depending on dimensions, can be measured over a temperature range (20 to 30) °C. Specific values are those which fall within ±0.5 % of the stated values. 6 The stated measured values are determined using the indicated instrument (see Comments). This capability is suitable for the calibration of the devices intended to measure or generate the measured value in the ranges indicated. CMC’s are expressed as either a specific value that covers the full range or as a percent or fraction of the reading plus a fixed floor specification. 7 This scope meets A2LA’s P112 Flexible Scope Policy.