October 5, 2022
Non-Accredited Calibrations
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It goes without saying that calibrating your measuring instruments is important. Calibration preserves your equipment’s accuracy. When looking for calibration services, you are most likely to come across two terms. These are Accredited and Non-Accredited. These are calibration levels that often confuse individuals. To clear up the confusion, here is detailed information about both these calibration levels.


Accredited Calibration

Accredited Calibrations issue a calibration certificate. The certificate has the accrediting body’s emblem on the document. Additionally, the calibration date appears on the certificate. The required date appears too, but only when given by the customer. Let us assume that your instrument gets used in regulated industries as a reference instrument. The quality standards followed in these industries demand a calibration complying with the toughest laws. In such cases, accredited calibration is the best solution.

The Accredited Calibration Service comprises the following:

  • Functional Evaluation
  • ISO/IEC 17025 Accredited Calibration
  • Adjustment of the instrument to suit its specifications
  • The replacement wearing parts and filters should be as needed
  • Certificate of calibration with as-found and as-left results
  • Report on Service
  • Calibration due date revision


Advantages of Calibrating Your Equipment At An Accredited Lab

  • Lesser Errors

The use of tight assessment methods ensures the correctness of the lab’s calibration process. Pre-defined procedures in place safeguard product quality from prevalent inaccuracies. For example, when precise air flow meter calibration is necessary, it is more efficient.

  • Simple Tracking

Outsourcing calibration procedures to a service provider helps ensure the highest level of precision. It also allows easy tracking of your equipment’s calibration schedule and all relevant facts. Thus, carrying out calibration audits becomes easy.

  • Service Expertise

The biggest benefit of working with an accredited lab is the subsequent confidence in quality. This comes from the fact that the lab goes through validation for accuracy by an independent accreditation authority. The authority also verifies whether the industry complies with necessary industry standards and regulations,  in the process ensuring the lab’s expertise in terms of calibration services given.

  • Quality Control

Accredited NABL calibration services involve a lot of research and training from Quality Control Labs. They do this to establish quality management systems that follow all state laws, rules, and regulations.


Non-Accredited Calibration

Non- accredited calibrations or NSIT Traceable calibrations are commercial and standard in nature. This kind of calibration uses internal calibration procedures and the ensuing certificate issued complies with SN EN 17025. The calibration certificate issued will include basic equipment information for the item’s calibration.

This information contains: 

  • Manufacturer
  • Model Number
  • Serial Number
  • Calibration Dates
  • Next Calibration Due Date
  • Environmental Conditions During Calibration
  • Pass/Fail or Intolerance/Out of Tolerance.

Differences between Non-Accredited and Accredited Calibrations

Accredited assures the following:

  • TechnicalCompetency
  • Skill in Performing Calibration
  • Adequate Equipment
  • Calibration Standard
  • Proper Facility with Environmental Control
  • Data Assurance

In Non-Accredited, the company is scrutinized if found lacking:

  • Supporting documents to establish traceability chain is not broken
  • Staff’s knowledge, skills, competency, and experience

Accredited: In Accredited Calibration, a calibration certificate is issued that has the accrediting body’s logo on the document along with a sticker. Additionally, explicit data, a traceability declaration, and an estimate of measurement uncertainty are also issued.

Calibration inaccuracies are frequent in non-accredited calibrations. These often lead to quality concerns, company losses, or jeopardized health and safety.

In case of devices and equipment, both accredited and non-accredited calibration is applicable. Testing and calibration happen regularly by accredited calibration laboratories and MI. Accredited calibration is better when accuracy, product quality, health, and safety are critical.

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