Donald Landers

US Patent:

40352943, Jul 12, 1977

Filed:

May 23, 1975

Appl. No.:

5/580175

Inventors:

Donald R. Landers - Ridgefield CT
Walter Greenfield - Ardsley NY
Peter D. Tukey - Tarrytown NY

Assignee:

Denver Chemical Manufacturing Company - Stamford CT

International Classification:

B01D 3300

US Classification:

210 77

Abstract:

A pressure differential sampling and filtering device and method comprising a tube adapted to hold a liquid to be filtered and an inner tube having a filter head adapted to be inserted into the tube and force the liquid up through the filter head into the inner tube is characterized by the employment of a filter head and by the inner tube being associated with and separable from a closed-end portion which then serves as a test tube when the assembly is inverted and the filter head separated therefrom.