Invention Grant
- Patent Title: Method for producing a purple complex for the presence of lead using sodium rhodizonate without use of strong acid
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Application No.: US16521829Application Date: 2019-07-25
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Publication No.: US11442049B2Publication Date: 2022-09-13
- Inventor: Frederic G Dewalt , David C Cox
- Applicant: Frederic G Dewalt , David C Cox
- Applicant Address: US PA Landenberg; US MD Chevy Chase
- Assignee: Frederic G Dewalt,David C Cox
- Current Assignee: Frederic G Dewalt,David C Cox
- Current Assignee Address: US PA Landenberg; US MD Chevy Chase
- Main IPC: G01N31/22
- IPC: G01N31/22
Abstract:
A method using ascorbic acid (Vitamin C) as part of a chemical test kit employing sodium rhodizonate as the coloring agent for producing a yellow-orange to purple color transition for detection of lead in various media eliminating the use of strong acid.
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