Regent tests, chemical test strips, and pH paper are forms of what?

• A. Immunoassay
• B. Dry chemistry
• C. Wet chemistry
• D. Chromatography

Answer: (C)

In hazmat testing, Regent tests, chemical test strips, and pH paper rely on color-changing indicators that react with a liquid sample, producing a visible result. This is characteristic of wet chemistry, where reactions occur in solution or with a moist medium. They aren’t immunoassays, which use antibody–antigen interactions; nor are they dry chemistry, which uses solid reagents without a liquid medium; nor chromatography, which separates components for identification. So the best classification is wet chemistry.