Sonic treatment to selectively reduce the void volume of sintere

Details Sonic treatment to selectively reduce the void volume of sintere Sonic treatment to selectively reduce the void volume of sintere

1998-01-14

2000-02-15

Alexander, Lyle A.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 56, 436169, 436 63, G01N 3348

Patent

active

060249196

ABSTRACT:
The present invention provides a method of sonic treatment to selectively reduce the void volume of a sintered polymer such as porous high density polyethylene (HDPE). The invention also provides a method and an article of manufacture for receiving a liquid sample, where a first portion of the sintered polymer (1a) overlies a solid surface (4a) and a second portion of the polymer (1b) overlies a window (4b). Sonic treatment of the sintered polymer reduces the void volume of the first portion (1a) compared to the second portion (1b). As a result, a liquid sample applied to the polymer will preferentially migrate through the second portion (1b), rather than through the first portion (1a). When the article of manufacture is used to analyze a liquid sample such as blood, less sample is required because of the preferential migration in the sonically treated sintered polymer.

REFERENCES:
patent: 4300910 (1981-11-01), Pannwitz
patent: 5470752 (1995-11-01), Burd et al.
patent: 5597532 (1997-01-01), Connolly
patent: 5639672 (1997-06-01), Burd et al.
patent: 5695949 (1997-12-01), Galen et al.

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