Chemical dosimeter having a constant flow air sampling pump

Details Chemical dosimeter having a constant flow air sampling pump Chemical dosimeter having a constant flow air sampling pump

1975-08-05

1977-12-20

Freeh, William L.

Pumps

Condition responsive control of pump drive motor

Responsive to change in rate of pump fluid flow

417 63, 417312, 417411, F04B 4900

Patent

active

040638243

ABSTRACT:
An improved chemical dosimeter for individual use which collects on a filter particles or vapors present in an air stream which is being pumped through the dosimeter at a constant rate, the improvement is the use of

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