IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

Ozone

French name in the regulation: Ozone
CAS : 10028-15-6
Synonyms: Triatomic oxygen

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)
ppm mg/m3 f/cc Notes
TWAEV - - - -
STEV - - - -
Ceiling 0,1 0,2 - -
Simple asphyxiant Percutaneous
Minimum exposure Sensitizer
Prohibited use Prohibited recirculation
Carcinogenicity

TWA adjustment for unusual work schedules

1A : No adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: Ozone

Analysis:

Ozone

Method: IRSST - 05-B
Sampling device:
Sampling media required:
#IRSSTDescription

Parameters:
Flow rate: -
TWA sampling volume: -
STEL sampling volume: -
Principle: Direct reading instrument-Electrochemical cell (DRI-elec)
Remarks: Refer to the user's guide that accompanies the instrument. Ozone is quantified in the field with a direct-reading instrument (DRI). The minimum reported value is 0.1 mg/m³ (0.05 ppm). The reference method corresponds to calibration of the DRI.
IRSST. "Étalonnage d'un instrument à lecture directe pour la mesure de l'ozone dans l'air ozone". Méthode 5-B. : Méthodes d'étalonnage. Montréal: IRSST, 1992.

Ozone

Method: IRSST - 05-B
Sampling device:
Sampling media required:
#IRSSTDescription

Parameters:
Flow rate: -
TWA sampling volume: -
STEL sampling volume: -
Principle: Metal oxide semiconductor (HMOS)
Remarks: Refer to the user's guide that accompanies the instrument. Ozone is quantified in the field with a direct-reading instrument (DRI). The minimum reported value is 0.1 mg/m³ (0.05 ppm). The reference method corresponds to calibration of the DRI.
IRSST. "Étalonnage d'un instrument à lecture directe pour la mesure de l'ozone dans l'air ozone". Méthode 5-B. : Méthodes d'étalonnage. Montréal: IRSST, 1992.
Following the amendment of Appendix 1 of the Quebec Regulation respecting occupational health and safety (RSST, RLRQ, c. S-2.1, r. 13), part of Quebec Occupational Health and Safety Act, which came into effect on March 26, 2020, the TWAEV, STEL and Ceiling values for certain substances are now expressed in ppm. For these substances, the IRSST performed the conversion calculations to express these TWAEV, TWA and Ceiling values in mg/m3, which thus appears in its Sampling Guide for Air Contaminants in the Workplace (Guide d'échantillonnage des contaminants de l'air en milieu de travail ) and the associated Substance Data Sheets. However, it is imperative to refer to the values expressed in the RSST which are legally binding.