The Standard Reference Photometer Program is used to certify the State, Local, and Tribal monitoring organizations' ozone primaray and transfer standards and is implemented through the Office of Radiation and Indoor Air (ORIA). Certification programs like the SRP program provide independent testing of products and or instrumentation and are used to provide a sense of quality and comparability. The following documents provide information on the SRP program.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Quality Assurance Project Plan for the Standard Reference Photometer Program (PDF)(55 pp, 1 MB, February 2017)
- Standard Operating Procedure (SOP) for the Verification and Re-Verification of EPA’s Ozone Standard Reference Photometers (PDF)(65 pp, 5 MB, September 2015)
- Technical Assistance Document - Transfer Standards For Calibration of Air Monitoring Analyzers for Ozone (PDF)(65 pp, 762 K, September 2015)