U.S. EPA Approvals

OPSIS Air Quality Monitoring DOAS system is designated equivalent to 40 CFR.

Parameter/Report No.

SO2  EQSA-0495-101
NO2  EQNA-0495-102
O3    EQOA-0495-103

OPSIS UV DOAS AQM system for benzene, ammonia and nitric oxide is U.S. ETV EPA tested.

OPSIS SM200 particulate monitor is designated equivalent method.

Parameter/Report No.

PM2.5 EQPM-0812-203
PM10  EQPM-0810-193

U.S. EPA List of Designated Methods >>
Notification for PM2.5 in the Federal Register >>
U.S. EPA website >>
U.S. ETV EPA website >>