enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  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. 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.

  5. 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 ...

  6. pH indicator - Wikipedia

    en.wikipedia.org/wiki/PH_indicator

    For example, if the concentration of the conjugate base is 10 times greater than the concentration of the acid, their ratio is 10:1, and consequently the pH is pK a + 1 or pK b + 1. 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.

  7. Duquenois–Levine reagent - Wikipedia

    en.wikipedia.org/wiki/Duquenois–Levine_reagent

    Any color that transfers into the organic layer is recorded. Marijuana (as well as a variety of other plant substances) becomes purple with the addition of the Duquenois reagent and hydrochloric acid. Upon addition of the organic solvent, the purple color transfers to the organic layer, indicating that cannabinoids may be present.

  8. Litmus - Wikipedia

    en.wikipedia.org/wiki/Litmus

    Litmus paper after being used. The main use of litmus is to test whether a solution is acidic or basic, as blue litmus paper turns red under acidic conditions, and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F). Neutral litmus paper is purple. [2]

  9. List of reagents - Wikipedia

    en.wikipedia.org/wiki/List_of_reagents

    strong mineral acid; applications include its use as a dehydrating agent in many chemical reactions, sulfonation, the purification of hydrocarbons, and the production of phosphoric acid tert-Butyl hydroperoxide: used in a variety of oxidation processes; industrially, is used as a starter of radical polymerization: Tetrahydrofuran