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FREQUENTLY ASKED QUESTIONS

Here are the frequently asked questions that you might help you to choose a suitable calibration laboratory. You may also check out with the Calibration Services, Calibration And Measurement and the value added services that SIRIM Standards Technology  provided.

What is Calibration?

As defined by ISO, IEC and OIML, calibration means:

“The set of operations which establish, under specified conditions, the relationship between values indicated by a measuring instrument or measuring system, or values represented by a material measure, and the corresponding known values of a measured”. In simple terms, four elements are to be satisfied; traceability, procedure, controlled environment and data.

Why Calibration?

There are many good reasons to do calibration. The two most popular reasons cited by metrologists are:

  • To meet quality system requirements (calibration certifcate such as ISO 9001, 14000, 17025, 18000, QS 9000, TS 16949,etc.)
  • To ensure quality in measurements.

What Equipment Needs to be Calibrated?

As a rule of thumb, any equipment that affects the quality of your products need to be calibrated.

Where do I send my equipment for calibration?

There are a lot of commercial calibration laboratories throughout Malaysia. The most important thing is to select a laboratory which meets the following criteria:

  • Reliability
  • Highest quality service
  • Wide range of coverage
  • Reasonable price (not necessarily the cheapest)

How do I select the appropriate calibration laboratory?

There are two ways, either by second or third party audit. Second party audit means that you do your own audit on the lab. If there is a constraint of time, select laboratories which have been audited by DSM (Skim Akreditasi Makmal Malaysia, SAMM) i.e. third party audit.Or perhaps come to us, we may advise you.

I always select the calibration lab which offers the cheapest fee. Am I making the right decision?

Strictly speaking, you will get what you pay for. You cannot get a Mercedes for the price of a Proton. The same goes for calibration. There are four criteria which determine calibration changes:

  • Complexity of calibration procedure
  • Minimum time required before calibration can be performed (e.g. soaking time for most of Dimensional items is from 8 hours to 24 hours).
  • Total time taken to perform the calibration
  • Level of expertise in performing the calibration

How about the Turn Around Time

The fastest is not always the best. Calibration TAT depends on:

  • Ratio of staff strength to volume of orders received for the particular lab.
  • Calibration process (manual or automated)
  • Technical requirements e.g. uncertainty in calculation/analysis, adjustment and so on
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