Check the issuer and the measurement
Search the NABL directory using the certificate number or laboratory name. Check its current status, address and facility type. In the scope document, match the quantity, method and range to the points in your order. Read the CMC, or calibration and measurement capability, for those points. Ask what uncertainty the issuer expects to report for your particular gauge.
Follow one requested point through the scope
Imagine ordering a check on a pressure transmitter at 6 bar, with an electrical output also recorded. First find the relevant pressure quantity and range on the issuer's current scope. Then ask whether the quoted job covers the output as well, where the work will take place and how any results outside the accredited scope will be identified.
Record the scope revision or issue date and the entry reviewed with the purchase order. Where two laboratories divide the work, establish which one issues each result. Your purchasing record should make it possible to repeat the same check on the next order.
Date the evidence you retain
RTS Calibration is a unit of Technex Calibration (OPC) Private Limited. The published certificate CC-4643 names that company. It states validity from 9 January 2026 to 8 January 2030, subject to its scope and conditions. Save the applicable scope, the date you checked it and the accepted quotation together.
For a gauge kept at a customer’s IMT Bawal site, record where the measurement will take place. Apply the same check to each plant when one order covers work in several states.