![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
National Performance Evaluation Program -
Ozone Standard Reference Photometer Program (SRP)
Certification programs provide some independent testing of products and or instrumentation and are used to provide a sense of quality and comparability. The Standard Reference Photometer Program which is used to certify State, Local, and Tribal monitoring organizations' ozone primaray and transfer standards will be implemented for NCore Level 2 and 3 sites through the Office of Radiation and Indoor Air (ORIA).
- SRP Schedule for Verification and Bias Upgrades (PDF) (1pg, 57 KB) - Oct 31, 2011
Note: The due dates on the table are not when the verifications will get done but just when they are due.
- Transfer Standards for Calibration of Air Monitoring Analyzers for Ozone (PDF) (67pp, 820 KB) - May 31, 2009