Invention Grant
- Patent Title: Components and method of use of a home lipstick lead test kit
- Patent Title (中): 家用口红铅测试套件的组件和使用方法
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Application No.: US14184652Application Date: 2014-02-19
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Publication No.: US09404907B2Publication Date: 2016-08-02
- Inventor: Katherine DuRussel
- Applicant: Katherine DuRussel
- Main IPC: G01N21/78
- IPC: G01N21/78 ; G01N21/77 ; G01N33/20 ; G01N33/52 ; G01N21/84

Abstract:
Lipsticks are tested by a lead indicator solution. A lipstick is swiped across a sheet of wax paper, forming a lipstick sample. The test solution is applied, in droplet form, to the sample of lipstick, and allowed to sit for a period of time so a chemical change can occur in the solution, if there is lead present in the lipstick. A cotton swab is used to absorb the solution, and the tip of the swab picks up a bit of the lipstick sample. A color change is observed in the solution on the swab if lead is present in the lipstick. The amount of lead is determined by what color the solution changes to.
Public/Granted literature
- US20150233886A1 Components and Method of Use of a Home Lipstick Lead Test Kit Public/Granted day:2015-08-20
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