Neutral Density Opacity Filter Recertification
Air Quality Services offers prompt,
NIST traceable
recertification of your neutral density opacity filters.
This service is provided with a turn-around-time of ten (10)
business days or less, and our rates are very reasonable. Complete
regulatory compliance ensured by rigid QA/QC practices.
 Services Include
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Filter
Recertification per 40 CFR Part 60 (Appendix B)
Revised Performance
Specification 1 (applicable to COMS installed or renovated after
2/5/2001) and, by reference, ASTM
Standard D6216-98
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NIST
Traceable
-
Prompt
notification of significant filter variations that may necessitate a
remedial option
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Annual
reminder service
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Enhanced
reports include both the numeric results and graphs of
transmittance readings at 10nm intervals over two scans, the second
scan rotated 90 degrees to the first. This reporting format promotes
compliance with the revised PS-1 regulatory requirement of less than
0.25% variance between the two scans.
-
VISA, Master Card
and American Express accepted
Please fill out the order form
and mail with the filters to:
Air Quality Services
425 Main Street
Evansville, IN 47708
Or call us at (812) 452-4785
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