Muhammad Kamran Gulzar genn. 13, 2020 Hello, We are managing a power plant construction project. Contractor has an on-site calibration lab for different instruments like temperature/pressure sensors, transmitters, flow meters etc. being calibrated locally before installation at site. Do this temporary lab needs to be accredited before it can perform its task? If lab have calibrating apparatus calibrated at ISO:17025 accredited laboratory, will it be enough? Also If none of the labs (local at the site and the one calibrating the apparatus being used in lab) are not accredited then what will be the status of instruments being calibrated? Are they acceptable for final integration in system? We are working in IEC jurisdiction geographical area. Thanks in advance, Regards, M. Kamran Gulzar Reply