Humboldt Mfg Co. dba Humboldt Scientific

(A2LA Cert No. 3956.02) 07/02/2025 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 HUMBOLDT MFG CO. dba HUMBOLDT SCIENTIFIC INC. 875 Tollgate Rd Elgin, IL 60123 Nestor Chonillo Phone: 708 468 6386 CALIBRATION Valid To: July 31, 2027 Certificate Number: 3956.02 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, 4: I. Dimensional Parameter/Equipment Range CMC2, 5 (±) Comments Linear Displacement – Measure (0.08 to 0.4) in (0.4 to 1.0) in (1.0 to 2.0) in 0.001 in 0.0007 in 0.005 in Bore micrometer Digital Dial Indicators Up to 2 in 180 µin Bore micrometer II. Mechanical Parameter/Equipment Range CMC2, 3 (±) Comments Load Cells (50 to 500) lbf (500 to 1000) lbf (1000 to 2000) lbf (2000 to 5000) lbf (5000 to 10 000) lbf 0.95 % 0.47 % 0.35 % 0.28 % 0.12 % Reference load cells

(A2LA Cert No. 3956.02) 07/02/2025 Page 2 of 2 Parameter/Equipment Range CMC2, 3 (±) Comments Load Ring (50 to 500) lbf (500 to 1000) lbf (1000 to 2000) lbf (2000 to 5000) lbf (5000 to 10 000) lbf (10 000 to 22 000) lbf 0.39 % 0.40 % 1.5 % 0.61 % 0.30 % 0.34 % Reference load cells Pressure Gauge Up to 150 psi 0.18 % Reference pressure transducer ____________________________________________ 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. 4 This scope meets A2LA’s P112 Flexible Scope Policy. 5 The type of instrument or material being calibrated is defined by the parameter. This indicates the laboratory is capable of calibrating instruments that measure or generate the values in the ranges indicated for the listed measurement parameter.