Lead test dauber

Details Lead test dauber Lead test dauber

1994-05-09

1996-09-24

Snay, Jeffrey

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Calorimeter

422 58, 422 61, 436 73, 436 77, 436 84, 436169, 451523, 451525, 15118, G01N 3320, G01N 2178

Patent

active

055588352

ABSTRACT:
A device for testing for the presence of lead on a painted surface includes a porous dauber formed from an absorbent sintered plastic. The dauber is preimpregnated with a powdered mixture containing rhodizonate dye which is activated by dipping the dauber in a small quantity of water. After activation, the dauber is rubbed on the surface and is then visually observed for a reaction with lead that may be in the surface. The device also includes an abrasive element that can be used to abrade the painted surface before contacting the same with the dauber.

REFERENCES:
patent: 3998012 (1976-12-01), Ness
patent: 4004376 (1977-01-01), Schepp et al.
patent: 4724568 (1988-02-01), Englehardt
patent: 4797243 (1989-01-01), Wolbrom
patent: 4870116 (1989-09-01), Wolbrom
patent: 5039618 (1991-08-01), Stone
patent: 5278075 (1994-01-01), Stone
patent: 5320969 (1994-06-01), Bauer et al.
patent: 5330917 (1994-07-01), Stone
patent: 5364792 (1994-11-01), Stone

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