Changsha Panran Technology Co., Ltd.
Some Reasons Why We Need to Determine Calibration Frequencies of Instruments
Source: | Author:J | Published time: 2025-04-30 | 13 Views | Share:

We need to determine the Calibration Frequency in order to satisfy below reasons:

1. To save cost. – by calibrating less frequently because of a longer calibration interval but ensuring reliability.
2. To satisfy requirements of customer or regulatory bodies
3. The need to perform recalibration –The reason why we “calibrate” also applies to why we “recalibrate”

a. The need to recalibrate.  Below are some technical reasons why we recalibrate

> Because of drift
> To detect any calibration problems before it affects quality
> Exposure to harsh environment
> Over usage
> To assure accuracy and reliability
> To ensure traceability


4. Compliance to the Requirements of ISO Standards – under ISO 17025:2017 and ISO 9001:2015 Standards which  controls and requires calibration interval analysis


a. Requirements for Calibration Frequency  as per ISO 17025:2017 Standards are for:

i. Establishing calibration program for calibrated Instruments

> As per clause 6.4.7 The laboratory shall establish a calibration program, which shall be reviewed and adjusted as necessary in order to maintain confidence in the status of calibration.


ii. Monitor Validity of results

 > As per clause 7.7.1 The laboratory shall have a procedure for monitoring the validity of results. g) retesting or recalibration of retained items;


iii. For documentation  as part of Technical Records,

> As per clause 6.4.13 Records shall be retained for equipment that can influence laboratory activities. The records shall include the following, where applicable: e) calibration dates, results of calibrations, adjustments, acceptance criteria, and the due date of the next calibration or the calibration interval;


b. Related Calibration Interval Requirements under ISO 9001:2015, as per clause 7.1.5.2 Measurement traceability

i. When measurement traceability is a requirement or is considered by the organization to be an essential part of providing confidence in the validity of measurement results, measuring equipment shall be: a) calibrated or verified, or both, at specified intervals, or prior to use, against measurement standards traceable to international or national measurement standards; 

ii. The organization shall determine if the validity of previous measurement results has been adversely affected when measuring equipment is found to be unfit for its intended purpose, and shall take appropriate action as necessary