Please also visit following blogs:
- 'EMS Awareness' Blog

Academic comments are invited.

Encouragement Support - National Centre for Quality Management. Please become a member of NCQM.

Keshav Ram Singhal

Various information, quotes, data, figures used in this blog are the result of collection from various sources, such as newspapers, books, magazines, websites, authors, speakers etc. Unfortunately, sources are not always noted. The editor of this blog thanks all such sources.

People from more than 145 countries/economies have visited this blog: Afghanistan, Albania, Algeria, Angola, Argentina, Aruba, Australia, Austria, Azerbaijan, Bahrain, Bangladesh, Belarus, Belgium, Belize, Benin, Bhutan, Bosnia and Herzegovina, Botswana, Brazil, Brunei, Bulgaria, Burundi, Cameroon, Cambodia, Canada, Chile, China, Colombia, Costa Rica, Croatia, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, Egypt, El Salvador, Estonia, Ethiopia, European Union, Fiji, Finland, France, Georgia, Germany, Ghana, Gibraltar, Greece, Guatemala, Guyana, Haiti, Honduras, Hong Kong S. A. R. (China), Hungary, Iceland, India, Indonesia, Iraq, Ireland, Israel, Italy, Ivory Coast, Jamaica, Japan, Jersey, Jordan, Kazakhstan, Kenya, Kuwait, Laos, Latvia, Lebanon, Lesotho, Libya, Lithuania, Luxembourg, Macao S. A. R. (China), Macedonia, Malawi, Malaysia, Maldives, Malta, Manila, Mauritius, Mexico, Moldova, Mongolia, Montenegro, Morocco, Mozambique, Myanmar, Namibia, Nepal, Netherlands, New Zealand, Nigeria, Niue, Norway, Oman, Pakistan, Palestinian Territory, Panama, Papua New Guinea, Peru, Philippines, Poland, Portugal, Puerto Rico, Qatar, Rwanda, Romania, Russia, Saint Lucia, Samoa, Saudi Arabia, Saint Kitts and Navis, Serbia, Seychelles, Singapore, Slovakia, Slovenia, Somalia, South Africa, South Korea, Spain, Sri Lanka, Sudan, Swaziland, Sweden, Switzerland, Syria, Taiwan, Tanzania, Thailand, Trinidad and Tobago, Tunisia, Turkey, Turks and Caicos Islands, UAE, Uganda, UK, Ukraine, USA, Uzbekistan, Venezuela, Vietnam, Zambia, Zimbabwe etc. Total visitors number crossed 100,000 on 14. 02. 2013. Total visitors number crossed 145,000 on 30. 09. 2013. Total visitors > 200,000 (from 01.08.2014)

Wednesday, August 12, 2009


K. R. Singhal

The purpose of this paper is to discuss calibration requirements as per ISO 9001:2008 QMS Standard and related issues.

A monitoring, measuring or testing activity is useful and effective only when measurement results are reliable. Measurement results should be sufficiently accurate with a known degree of uncertainty. For this purpose, there is a need to control monitoring and measuring equipment that have the desired level of accuracy and consistency under condition of actual use.

Clause 7.6 of ISO 9001:2008 QMS Standard deals with control of monitoring and measuring equipment. This clause interalia speaks about calibration of monitoring and measuring equipment. The purpose of requirements in clause 7.6 of ISO 9001:2008 QMS Standard is to ensure suitability of monitoring and measuring equipment.

Requirements of Clause 7.6

The organization must determine (i) what to monitor and measure, and (ii) the monitoring and measuring equipment needed. Monitoring and measuring equipment is helpful in providing evidence of conformity of product to determined requirements.

The organization must establish processes to ensure carrying out monitoring and measurement in consistent with the requirements. As such, it is necessary to have a detailed process system established and maintained for keeping the monitoring and measuring equipment accurate and good operating conditions.

Where necessary to ensure valid results – (i) monitoring and measuring equipment must be calibrated or verified, or both, at specified intervals (decided by the organization), or prior to use, against international or national measurement standard, (ii) monitoring and measuring equipment must be adjusted or re-adjusted as necessary, (iii) monitoring and measuring equipment must have identification in order to determine its calibration status – when the calibration or verification was done and what is the due date for calibration or verification, (iv) monitoring and measuring equipment must be safeguarded from such adjustment that invalidates the measurement result, and (v) monitoring and measuring equipment be protected from damage and deterioration.

Where no international or national standards exist for calibration or verification of the equipment, the basis used for calibration or verification must be recorded. It is better to record the process used and the personnel who carried out calibration and verification.

The organization must assess and record the validity of the previous measuring results when the equipment is found not to conform to requirements. In such case, the organization must take appropriate action on the equipment and any product affected.

The organization is required to maintain records of the results of calibration and verification.

Whenever computer software is used in the monitoring or measurement bof specified requirements, it is necessary to conform the ability of the computer software to satisfy the intended application. This must be undertaken prior to initial use and re-conformed as necessary.

Note at the end of clause 7.6 of ISO 9001:2008 clarifies that confirmation of computer software’s ability to satisfy the intended application would typically include its verification and configuration management to maintain its suitability for use.

Finding international or national standard for calibration or verification

To find out relevant international or national standard for calibration or verification, of monitoring and measuring equipment, it is suggested to refer to the latest ISO Catalogue of Standards for international standards and the latest BIS Catalogue for Indian Standards.

Comments may be sent to ncqmajmer@gmail.com


nehad said...

Dear Mr. Singhal,

My question :
If we need to have referance tools as the tyre pressure Gage, and the calibration of this gage equal the price of new gage

What is the best soulution:
1- to by new referance each year ?
2- or to by high quality gage as a referance tool

Best regards,


Anonymous said...


I like this post:

You create good material for community.

Please keep posting.

Let me introduce other material that may be good for net community.

Source: ISO 9001 software

Best rgs

Calibration said...

My cousin recommended this blog and she was totally right keep up the fantastic work!

calibration singapore said...

Great thoughts you got there, believe I may possibly try just some of it throughout my daily life...

Calibration Singapore

Jashwa A said...

Dear sir,
Now i am working in small scale industrie there are more no of plug gauges are available nearly 30 gauges for ex one gauge has the tolerence of go55.995 nogo 56.014 how can i calibrate this gauge whether in nabl labarotery or check by myself if i am go to the lab cost is high. how can i check?