Industrial Scales & Systems, Inc./ISSI Metrology Group

(A2LA Cert. No. 4017.01) Revised 09/10/2025 Page 2 of 3 II. Mechanical Parameter/Equipment Range CMC2, 4 (±) Comments Scales and Balances3 Up to 500 mg >500 mg to 10 g (>10 to 50) g (>50 to 100) g (>100 to 200) g (>200 to 500) g (>500 to 1000) g (>1000 to 3000) g (>3000 to 6500) g (>6.5 to 10) kg (>10 to 20) kg (>20 to 50) kg (>50 to 100) kg (>100 to 250) kg (0 to 200) lb (>200 to 500) lb (>500 to 5000) lb 0.0043 mg + 0.6R 0.025 mg + 0.6R 0.069 mg + 0.6R 0.13 mg + 0.6R 0.06 mg + 0.6R 0.15 mg + 0.6R 0.34 mg + 0.6R 1.6 mg + 0.6R 4.3 mg + 0.6R 0.43 g + 0.6R 0.64 g + 0.6R 1.4 g + 0.6R 4.5 g + 0.6R 17 g + 0.6R 0.06 lb + 0.6R 0.14 lb + 0.6R 1.2 lb + 0.6R Class 1 weights Class 2 weights Class 6 and Class F weights ___________________________________________ 1 This laboratory offers commercial and field 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 Field calibration service is available for this calibration. Please note the actual measurement uncertainties achievable on a customer's site can normally be expected to be larger than the CMC found on the A2LA Scope. Allowance must be made for aspects su ch as the environment at the place of calibration and for other possible adverse effects such as those caused by transportation of the calibration equipment. The usual allowance for the actual uncertainty introduced by the item being calibrated, (e.g. resolution) must also be considered and this, on its own, could result in the actual measurement uncertainty achievable on a customer’s site being larger than the CMC. 4 In the statement of CMC, L is the numerical value of the nominal length of the device measured in inches; R represents the resolution of the device, and percentages are to be read as percent of reading, unless otherwise noted. 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.

(A2LA Cert. No. 4017.01) Revised 09/10/2025 Page 3 of 3 6 This scope meets A2LA’s P112 Flexible Scope Policy.