Dry type analysis element

Details Dry type analysis element Dry type analysis element

1988-04-04

1990-04-24

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 57, 436135, 436170, 436810, 435 28, 435805, 435810, G01N 148

Patent

active

049198904

ABSTRACT:
A dry type analysis element for detecting a specific constituent in a liquid is provided. The dry type analysis element comprises a light-transmissive support having thereon at least one water-penetrative layer, at least one of said water-penetrative layer(s) containing a composition capable of interacting with said specific constituent in said liquid, wherein said composition contains a leuco dye comprising at least one compound selected from the group consisting of compounds represented formula [I] and salts of these compounds ##STR1## wherein R.sup.1 represents a substituted or unsubstituted aryl group, R.sup.2 represents a substituted or unsubustituted alkyl group, and R.sup.3 represents a substituted or unsubstituted aryl group,
and said leuco dye is dissolved in a hydrophobic solvent to form a solution that is contained in said water-penetrative layer as a dispersion in a hydrophilic medium.

REFERENCES:
patent: 4089747 (1978-05-01), Bruschi
patent: 4547461 (1985-10-01), Esders et al.
patent: 4604264 (1986-08-01), Rothe et al.
patent: 4665023 (1987-05-01), Deneke et al.
patent: 4788140 (1988-11-01), Findley et al.
patent: 4812399 (1989-03-01), Mauck et al.

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