U.S. EPA
The Opsis system is designated equivalent to 40 CFR.
| SO2 |
EQSA-0495-101 |
| NO2 |
EQNA-0495-102 |
| O3 |
EQOA-0495-103 |
Link to U.S. EPA >>
U.S. ETV EPA
Verification of Opsis UV DOAS AQM system for benzene,
ammonia and nitric oxide, and of Opsis SM 200 particulate
monitor for PM2.5.
Link to U.S. ETV EPA >>