ISO/IEC 17025:2017 - Measurement Uncertainty and Traceability Professional Quiz 01 26Jul25 - Practice Quiz

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Question 1 of 30

A quality manager at an accredited testing laboratory discovers that the calibration certificate for a primary reference mass standard, crucial for calibrating the laboratory\'s analytical balances, has been misplaced and cannot be located. The laboratory has been performing critical mass measurements for clients for the past six months using balances calibrated against this standard. What is the most appropriate immediate course of action for the laboratory to maintain compliance with ISO/IEC 17025:2017 and ensure the validity of its reported results?

Immediately cease using the affected analytical balances and re-establish traceability for all measurements performed using them since the last known valid calibration of the reference mass standard.

Issue a disclaimer on all previously issued reports stating that traceability may be compromised and await further instructions from regulatory bodies.

Continue using the balances but increase the frequency of internal checks to compensate for the missing calibration certificate.

Attempt to reconstruct the calibration history based on maintenance logs and operational data, assuming the traceability remains intact until proven otherwise.

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