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2. List of reagent testing color charts - Wikipedia

   en.wikipedia.org/wiki/List_of_reagent_testing...

   It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]

3. Marquis reagent - Wikipedia

   en.wikipedia.org/wiki/Marquis_reagent

   Marquis reagent test analysis Substance Color Time (s) Notes MDMA or MDA: purple to black 0–5: May have dark purple tint Amphetamine, or methamphetamine: orange to brown 0–5: May have a brown tint 2C-B: yellow to green 5–10: Color may change from initial result [7] DXM: gray to black 15–30: Initially no change; takes much longer to ...

4. Orange G - Wikipedia

   en.wikipedia.org/wiki/Orange_G

   Orange G can be used as an electrophoretic color marker to monitor the process of agarose gel electrophoresis, running approximately at the size of a 50 Base pair (bp) DNA molecule, and polyacrylamide gel electrophoresis. Bromophenol blue and xylene cyanol can also be used for this purpose. (However, the apparent "size" of all these dyes varies ...

5. Neogen's (NEOG) Food Safety Test Receives AOAC Clearance

   www.aol.com/news/neogens-neog-food-safety-test...

   Neogen's (NEOG) Reveal 3-D safety test for checking peanut contamination in food items gets approval from the AOAC.

6. Neogen (NEOG) Launches Dairy Toxin Detection Test Reveal Q+ - AOL

   www.aol.com/news/neogen-neog-launches-dairy...

   Neogen's (NEOG) new test can detect cancer causing aflatoxin M1 in milk within a range of 150-600 parts per trillion (ppt). Neogen (NEOG) Launches Dairy Toxin Detection Test Reveal Q+ Skip to main ...

7. Human hair color - Wikipedia

   en.wikipedia.org/wiki/Human_hair_color

   The Fischer–Saller scale, named after Eugen Fischer and Karl Saller is used in physical anthropology and medicine to determine the shades of hair color. The scale uses the following designations: A (very light blond), B to E (light blond), F to L (), M to O (dark blond), P to T (light brown to brown), U to Y (dark brown to black) and Roman numerals I to IV and V to VI (red-blond).

8. Diagnostic microbiology - Wikipedia

   en.wikipedia.org/wiki/Diagnostic_Microbiology

   The chemical 5-bromo-4-chloro-3-indolyl-beta-D-galactoside is used in the test because N. lactamica can hydrolyze it with the production of β-galactosidase, turning the solution into a blue color. Gamma-glutamyl-p-nitroanilide is added to the solution to indicate whether the bacteria is N. meningitides, which hydrolyzes the molecule with the ...

9. Liebermann reagent - Wikipedia

   en.wikipedia.org/wiki/Liebermann_Reagent

   The test is performed by scraping off a small amount of the substance and adding a drop of the reagent (which is initially clear and colorless). The results are analyzed by viewing the color of the resulting mixture, and by the time taken for the change in color to become apparent.