Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Calorimeter
Patent
1994-09-23
1996-02-27
Alexander, Lyle A.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Calorimeter
422 58, 435805, 436170, G01N 2117
Patent
active
054946387
ABSTRACT:
The present invention relates to a membrane suitable for use as the support for one or more test reagents for testing a material applied to the membrane, which membrane is characterized in that it is initially an open pored porous material and in that at least part of the length the pores therein are blinded so that cell wall fragments from the material applied to the membrane are substantially prevented from passage through the membrane. Preferably, the pores are totally blinded by a gelatin matix containing one or more reagents which react with a fluid applied to one surface of the membrane to give a color which can be observed from a second surface of the membrane.
REFERENCES:
patent: 4824639 (1989-04-01), Hildenbrand et al.
patent: 4935346 (1990-06-01), Phillips et al.
patent: 5019347 (1991-05-01), Hiratsuka et al.
patent: 5049487 (1991-09-01), Phillips et al.
patent: 5059394 (1991-10-01), Phillips et al.
patent: 5160436 (1992-11-01), Hildenbrand et al.
Alexander Lyle A.
Hypoguard (UK) Limited
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