Method and apparatus for testing and using membrane filters in a

Details Method and apparatus for testing and using membrane filters in a Method and apparatus for testing and using membrane filters in a

Filed on

1981-05-20

Date issued

1983-05-24

Examiner

Yasich, Daniel M.

Patent Class

Measuring and testing

SubClass

With fluid pressure

SubSubClass

Porosity or permeability

Other Related Categories

73432R, 210 95, B01D 3900, G01L 1900

Type

Patent

Status

active

Patent number

043844740

Description

ABSTRACT:
An improved method and apparatus for controlled pressure testing at least one membrane filter in an on site of use housing, and to simultaneously test a plurality of membrane filters in a covered common housing at the site of use to independently determine by visual flow indicators if each filter is acceptable for use or is defective.

REFERENCES:
patent: 2432814 (1947-12-01), Schmidt
patent: 3039293 (1962-06-01), Reddick et al.
patent: 3293431 (1966-12-01), Bennett et al.
patent: 3336793 (1967-08-01), Tuttle
patent: 3478601 (1969-11-01), Niebergall
patent: 3505876 (1970-04-01), Niebergall
patent: 3757947 (1973-09-01), Wakefield et al.
patent: 3824823 (1974-07-01), Pontello
patent: 3876738 (1975-04-01), Marinaccio et al.
patent: 3977253 (1976-08-01), Lewis
patent: 4120794 (1978-10-01), Taylor
patent: 4184966 (1980-01-01), Pall
patent: 4218313 (1980-08-01), Aid et al.

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