Asbestos sample filter clearing system

Details Asbestos sample filter clearing system Asbestos sample filter clearing system

1988-08-10

1989-10-31

Raevis, Robert R.

Measuring and testing

Sampler, sample handling, etc.

Flow divider, deflector, or interceptor

G01N 100

Patent

active

048769010

ABSTRACT:
A portable apparatus that can be used in a laboratory or at the inspection site in connection with detecting airborne asbestos which employs an acetone vapor clearing technique for cellulose ester filters exposed to airborne asbestos fibers. A metered quantity of acetone is applied to a flash vaporization chamber for each filter tested and the vapor is ducted to the filter to give an even and rapid clearing of the filter while limiting the generation of highly flammable vapors to reduce the risk of fire. This apparatus is in conformance with requirements specified in NIOSH Method 7400.

REFERENCES:
patent: 4748051 (1988-05-01), Songer et al.

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