The National Accreditation Board for Testing and Calibration Laboratories (NABL) on November 03, 2025, issued the notification regarding the amendment to the Specific Criteria for Air Quality Monitoring Equipment Calibration Laboratories.
The following has been stated namely: -
• The requirements in this document are based on the International Standard i.e. ISO/IEC 17025: 2017- “General requirements for the competence of testing and calibration laboratories”.
• This document must be used in conjunction with ISO/IEC 17025: 2017. It provides an interpretation of the latter document and describes specific requirements
• This document is issued to ensure that the data collected overtime through the Air Monitoring Equipment is accurate, reliable, and valid for regulatory compliance, public health protection, and effective environmental management.
• Acoustic noise level in the laboratory shall be maintained to facilitate proper performance of calibration work. Noise level shall be maintained less than 60 dBA, wherever it affects adversely the required accuracy of measurement.
[Notification No. NABL 138]
