|Topic: Air contaminants – Instruments calibration||Issued by: V.P.,WorkSafe Services|
|Statute: General Regulation 91-191||Date Issued: December 11, 1998|
|Section: 24(4)||Date Revised:|
24(4) Where an employer or an employee has reason to believe that the level of concentration of an air contaminant may be approaching 50% of the threshold limit value, the employer shall ensure that the air is tested to determine the level of concentration of the air contaminant.
Is it necessary to calibrate instruments before testing?
While the subsection does not make specific reference to calibration, it is necessary to calibrate instruments before testing.