Test swab cartridge type device and method for detecting lead and cadmium
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United States of America Patent
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Aug 13, 1991
Issued Date -
N/A
app pub date -
May 7, 1990
filing date -
Feb 2, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A swab is impregnated with a test reagent such that a test for a specific substance can be effected by rubbing the impregnated swab over the surface to be tested and then viewing the swab for a reagent reaction. A method for testing for a metal includes impregnating a swab with a reagent, such as, for example, a rhodizonate dye reagent when testing for lead, and rubbing the swab over a surface suspected of containing the metal. If a metal is present in the surface, a reaction with the metal produces an easily detectable color on the swab tip.
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