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Allows sampling from a pressurized source or at a higher flow rate than can be
achieved with a 37mm filter format. The 47mm holder has an effective filtration
area of 47% more than a 37mm cassette. The holder may be used with pressures
up to 100 psig at the inlet (70 psi maximum differential), or in a vacuum mode.
Uses include the determination of breathing air quality (type D), as well as
NFPA requirement for medical gas pipe cleanliness (Regulation 4-5.1.3.5 Piping
purge test NFPA 99-1993). |
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