Hioki USA

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(A2LA Cert. No. 6494.01) 09/16/2025 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 HIOKI USA 18383 Preston Road Suite150 Dallas, TX 75252 James Hamiter III Phone: 469 257 3534 CALIBRATION Valid to: December 31, 2027 Certificate Number: 6494.01 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, 3: I. Electrical – DC/Low Frequency Parameter/Equipment Range CMC2, 4 (±) Comments DC Voltage – Generate (Single Points) 100 mV 1 V 10 V 100 V 1.5 µV 10 µV 95 µV 2.4 mV Fluke 5522A calibrator monitored with Agilent 3458A DC Resistance – Generate (Single Points) 100 mΩ 1 Ω 10 Ω 100 Ω 1 kΩ 10 kΩ 100 kΩ 1 MΩ 2 µΩ 8 µΩ 69 µΩ 620 µΩ 7 mΩ 61 mΩ 640 mΩ 6.6 Ω Alpha Electronics CSR- 1R0 resistors AC Voltage – Generate (Single Points) 1 kHz Only 100 mV 1 V 10 V 100 V 20 µV 190 µV 2 mV 26 mV Fluke 5522A calibrator monitored with Agilent 3458A DC Current – Generate (Single Points) 100 µA 1 mA 10 mA 100 mA 4 nA 40 nA 400 nA 6 µA Fluke 5522A calibrator monitored with Agilent 3458A

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(A2LA Cert. No. 6494.01) 09/16/2025 Page 2 of 2 __________________ 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 Uncertainty due to the behavior of the customer’s device and to influences from the circumstances of the specific calibration. 3 This scope meets A2LA’s P112 Flexible Scope Policy. 4 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. CMCs are expressed as eithe r a specific value that covers the full range or as a percent or fraction of the reading plus a fixed floor specification.

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For the calibrations to which this accreditation applies, please refer to the laboratory’s Calibration Scope of Accreditation. Accredited Laboratory A2LA has accredited HIOKI USA Dallas, TX for technical competence in the field of Calibration 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 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 16th day of September 2025. _______________________ Mr. Trace McInturff, Vice President, Accreditation Services For the Accreditation Council Certificate Number 6494.01 Valid to December 31, 2027