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  2. XLD agar - Wikipedia

    en.wikipedia.org/wiki/XLD_agar

    Salmonella species: red colonies, some with black centers. The agar itself will turn red due to the presence of Salmonella type colonies. Shigella species: red colonies. Coliforms: yellow to orange colonies. Pseudomonas aeruginosa: pink, flat, rough colonies. This type of colony can be easily mistaken for Salmonella due to the color similarities.

  3. List of reagent testing color charts - Wikipedia

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

    Reagent test Alcohols: Forms Lucas test in alcohols is a test to differentiate between primary, secondary, and tertiary alcohols. Alkaloids: Forms Froehde Liebermann Mandelin Marquis Mayer's Mecke Simon's: Amines, and amino acids: Forms Folin's: Barbiturates: Class Dille–Koppanyi Zwikker: Benzodiazepines: Class Zimmermann: Phytocannabinoids ...

  4. TSI slant - Wikipedia

    en.wikipedia.org/wiki/TSI_slant

    The TSI slant is a test tube that contains agar, a pH-sensitive dye , 1% lactose, 1% sucrose, 0.1% glucose, [2] and sodium thiosulfate and ferrous sulfate or ferrous ammonium sulfate. All of these ingredients are mixed together, heated to sterility, and allowed to solidify in the test tube at a slanted angle.

  5. Iodine–starch test - Wikipedia

    en.wikipedia.org/wiki/Iodine–starch_test

    The cut surface of an apple stained with iodine, indicating a starch level of 4–5. The iodine–starch test is a chemical reaction that is used to test for the presence of starch or for iodine. The combination of starch and iodine is intensely blue-black. [1] [2] The interaction between starch and the triiodide anion (I − 3) is the basis ...

  6. IMViC - Wikipedia

    en.wikipedia.org/wiki/IMViC

    The term "IMViC" is an acronym for each of these tests. "I" is for indole test; "M" is for methyl red test; "V" is for Voges-Proskauer test, and "C" is for citrate test. The lower case "i" is merely for "in" as the Citrate test requires coliform samples to be placed "in Citrate". These tests are useful in distinguishing members of ...

  7. Today's Wordle Hint, Answer for #1255 on Monday, November 25 ...

    www.aol.com/todays-wordle-hint-answer-1255...

    This color is made by mixing three primary colors: red, yellow and blue. OK, that's it for hints—I don't want to totally give it away before revealing the answer!

  8. Agar plate - Wikipedia

    en.wikipedia.org/wiki/Agar_plate

    Agar plates may also be indicator plates, in which the organisms are not selected based on growth, but are instead distinguished by a color change in some colonies, typically caused by the action of an enzyme on some compound added to the medium. [6] The plates are incubated for 12 hours up to several days, depending on the test that is performed.

  9. Should you throw out your black plastic cooking utensils? - AOL

    www.aol.com/lifestyle/black-plastic-spatulas...

    New details about a study that warned against black plastic spatulas and other kitchen tools have come out. (Getty Creative) (Анатолий Тушенцов via Getty Images)

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