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  2. Chemical Agent Detector Paper - Wikipedia

    en.wikipedia.org/wiki/Chemical_Agent_Detector_Paper

    It cannot identify what particular agent it is being exposed to. The tape is typically a dull cream color when not exposed to chemical agents, but will turn red in the presence of chemical agents. [4] The tape is made from Mylar, which is the sticky backing, and a red agent detection dye. The detector tape does have false positives, which can ...

  3. 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]

  4. Agentase Chemical Agent Detection Kit - Wikipedia

    en.wikipedia.org/wiki/Agentase_Chemical_Agent...

    The Agentase Chemical Agent Detection (CAD) Kit, formerly known as the Fido C1 CAD Kit, is an enzyme-based chemical detection kit that contains six different sensors that are designed to detect specific chemical warfare agents (CWAs) and other toxic chemical contaminants at trace levels. The kit is provided in a small pouch and can detect the ...

  5. Marquis reagent - Wikipedia

    en.wikipedia.org/wiki/Marquis_reagent

    The United States Department of Justice method for producing the reagent is the addition of 100 mL of concentrated (95–98%) sulfuric acid to 5 mL of 40% formaldehyde. [1]: 12 Different compounds produce different color reactions. Methanol may be added to slow down the reaction process to allow better observation of the colour change.

  6. pH indicator - Wikipedia

    en.wikipedia.org/wiki/PH_indicator

    Conversely, if a 10-fold excess of the acid occurs with respect to the base, the ratio is 1:10 and the pH is pK a − 1 or pK b − 1. For optimal accuracy, the color difference between the two species should be as clear as possible, and the narrower the pH range of the color change the better.

  7. Colorimetric analysis - Wikipedia

    en.wikipedia.org/wiki/Colorimetric_analysis

    The equipment required is a colorimeter, some cuvettes and a suitable color reagent. The process may be automated, e.g. by the use of an AutoAnalyzer or by flow injection analysis . Recently, colorimetric analyses developed for colorimeters have been adapted for use with plate readers to speed up analysis and reduce the waste stream.

  8. Spot test (lichen) - Wikipedia

    en.wikipedia.org/wiki/Spot_test_(lichen)

    The lichen fragment is pressed on the paper, and lichen substances are extracted with 10–20 drops of acetone. After evaporating the acetone, the lichen substances are left on the paper in a ring around the lichen fragment. The filter paper can then be spot tested in the usual way. [21]

  9. Humidity indicator card - Wikipedia

    en.wikipedia.org/wiki/Humidity_indicator_card

    Once again, the Joint Electron Device Engineering Council (JEDEC), now the standards body for semiconductor packaging, went to the descendants of R. Admiral Blinn to determine the feasibility of making a 5% color change humidity indicator. In April 1999, J-STD-033 was released with a 5, 10, 15% color change indicator card specified.