Patent ID: 9128075
Filing Date: 2015-09-08
Classification: G01N,Y10T

Abstract:
1. A method for reducing a sensitivity of a chemical test kit for detecting lead-based paint to increase a concentration of lead in a paint sample at which the chemical test kit generates a positive response, the method comprising the following steps: (a) providing a chemical test kit for detecting lead-based paint wherein the chemical test kit has one or more test kit chemicals to induce a chemical reaction on exposure of a paint sample to the one or more test kit chemicals with a positive response at a predetermined concentration of lead in a paint sample, the positive response indicative of a presence of lead in the paint sample equal to or exceeding the predetermined concentration, and a negative response indicative a lack of lead in the paint sample equal to or exceeding the predetermined concentration; (b) providing a paint sample with a known surface area; (c) providing a diluent of known volume wherein the diluent comprises a solid, dry material; (d) providing a grinding device; (e) placing the diluent of known volume into the grinding device; (f) placing the paint sample into the grinding device on top of at least a portion of the diluent; (g) actuating the grinding device for a given period of time thereby grinding the diluent and the paint sample to produce a volume of a dry, solid matrix of grind material that exhibits a positive response on exposure to the one or more test kit chemicals at a higher concentration of lead in the paint sample that is higher than the predetermined concentration level of lead in a paint sample of the chemical test kit; (h) collecting a test volume of material from the dry, solid matrix of grind material in the grinding device; (i) exposing the test volume of material while in a dry, solid matrix to the one or more test kit chemicals; and (j) observing the test volume of material after exposing the test volume of material to the one or more test kit chemicals to determine whether the chemical reaction induced a positive response at the higher concentration of lead in the paint sample or a negative response.