If a testing equipment is found out of calibration, what is the appropriate action?

• A. Calibrate it yourself on site without record.
• B. Continue testing with it and note it.
• C. Replace it with uncertified equipment.
• D. Stop using it until it is recalibrated and records updated; use certified equipment for tests.

Answer: (D)

When testing equipment is out of calibration, the measurements it provides are no longer trustworthy. Calibration ties readings to a known standard within specified tolerances and creates a traceable record of the instrument’s accuracy. Therefore, you must stop using the instrument until it is recalibrated and its calibration records are updated, and you should rely on certified, calibrated equipment for any tests in the meantime. On-site calibration without proper documentation undermines traceability and QA, and continuing to test with uncalibrated or uncertified equipment risks producing noncompliant or misleading results. Recalibration and updated records ensure the data you collect reflects true conditions and can be verified.