Obsnap Instruments Sdn Bhd
29A, Jalan SS 15/4C,
47500 Subang Jaya,
Selangor, Malaysia.
+603-5621 5786
+603-5621 5829

Calibration Q&A

What is Calibration?

To ensure Measurement & Testing Accuracy is maintained.

Calibration is a process to check, adjust or determine the comparison of measurement values delivered by a unit under test with a calibration standard of known accuracy that can be traced back to agreed international standards – the system of SI units – e.g. Metre, Litre, Kilogramme, Kelvin, Ampere, Second, and more.

The outcome should show no significant error on the equipment, otherwise technical adjustment will be made for any signs of significant error to bring it into alignment with the calibration standard.

Why is Calibration Important?

To Reduce Measuring Error while comlying to international Standards
  • Even the most precise measurement instrument and equipment has the possibility of experiencing error during the measurement and some unavoidable uncertainty in the measurement. A calibrated equipment can prevent costly surprise of rejects and rework, which normally due to out of tolerance. 
  • It is a mandatory requirement of QA standard ISO 9001 to demonstrate control of the measurement and test equipment. Part of this is ensuring that instruments are calibrated on a rational periodic cycle, and that records are maintained and reviewed.
In a workplace, calibration allows you to use your measuring & testing instrument with confidence.

Why Rely on an Accredited Calibration Laboratory?

ESPECIALLY those with ISO/IEC 17025;2017 & ILAC MRA

By using a calibration laboratory that is accredited to the international standard ISO/IEC 17025.

This standard requires laboratories to demonstrate competence in both the technical aspects of the measurements and in the quality assurance aspects that ensures you get a useful and valid “traceable” calibration certificate and set of results you can rely on.

How often should Calibration be done?

The frequency of calibration depends on:
  • Manufacturer-recommended calibration interval – Manufacturers’ specifications usually indicates how often to calibrate their instruments,
  • How important the measurements being made are to your product or service;
  • The degree of wear and tear that the instrument will experience in during service;
  • The stability of the instrument itself and a review of the calibration records that already exist to determine whether adjustment
    has been needed previously.
  • General recommendation is a starting periodicity of 12 months for most instruments and may increase the calibration frequency to half-yearly or quarterly if adjustment is required or reduce to 2 years if equipment is fairly stable after a sequence of annual calibrations.

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