Opacity Certification Services (OCS) offers opacity filter recertification services as well as new or replacement opacity filters, all certified traceable to the National Institute of Standards and Technology (NIST), for just about any brand of monitor on the market—including diesel emission monitors.
What We Do
OCS opacity filter recertifications are performed in-house with a laboratory-based spectrophotometer, and calibrated with NIST SRM's to provide NIST traceability. OCS meets or exceeds requirements set in 40 CFR Part 60, Appendix B, Performance Specification 1.
We recertify and manufacture opacity filters for just about any brand of monitor on the market.
Friendly, hardworking people who actually want to help
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If you are experiencing issues with your original Teledyne-Monitor Labs LightHawk 560 filters, OCS can help. Our new opacity filters are guaranteed not to drop more than 0.3 absolute opacity over a one-year period. We manufacture filters for most brands and models on the market, including:
Teledyne-Monitor Labs LightHawk 560 series
Durag D-R290 series
Ametek-Land 4500 MkII series
EMS 1304 series
Phoenix Instruments Opac20/20
and many others
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