| amino acid reagent | A reagent used in the identification and quantification of amino acids. (05 Mar 2000) |
|---|---|
| Benedict-Hopkins-Cole reagent | <chemistry> Magnesium glyoxalate, made from a mixture of oxalic acid and magnesium, used for testing proteins for the presence of tryptophan. (12 Aug 2000) |
| biuret reagent | An alkaline solution of copper sulfate. (05 Mar 2000) |
| Mandelin's reagent | A solution of ammonium vanadate in sulfuric acid, used in colour tests for alkaloids. (05 Mar 2000) |
| reagent | <technique> A histochemical technique based on periodic acid oxidation of a substance containing the 1,2-glycol grouping. It is used for staining carbohydrates as the resulting dialdehyde reacts with Schiff reagent to form a coloured product. The adjacent hydroxyl groups are oxidized to form aldehydes by periodic acid (HIO4) and these aldehyde groups react with Schiff's reagent (basic fuchsin decolourised by sulphurous acid) to give a purple colour. Acronym: PAS (18 Nov 1997) |
| reagent kits, diagnostic | Commercially prepared reagent sets, with accessory devices, containing all of the major components and literature necessary to perform one or more designated diagnostic tests or procedures. They may be for laboratory or personal use. (12 Dec 1998) |
| reagent strips | Narrow pieces of material impregnated or covered with a substance used to produce a chemical reaction. The strips are used in detecting, measuring, producing, etc., other substances. (12 Dec 1998) |
| Marme's reagent | A solution of potassium iodide and cadmium iodide used in testing for alkaloids. (05 Mar 2000) |
| Marquis' reagent | A solution of formaldehyde in sulfuric acid used in colour tests for formaldehyde. (05 Mar 2000) |
| Girard's reagent | The hydrazine of betaine chloride, used to extract ketonic steroids by forming water-soluble hydrazones with them. (05 Mar 2000) |
| Mecke's reagent | A solution of selenous acid in sulfuric acid, used for colour tests of alkaloids. (05 Mar 2000) |
| melzer's reagent | A stain used to study the cellular structure of fungi. (09 Oct 1997) |
| Gunzberg's reagent | Phloroglucin and vanillin used as a reagent in Gunzberg's test. (05 Mar 2000) |
| Meyer's reagent | A solution of phenolphthalein 0.032, in decinormal sodium hydroxide 21, with water (distilled from glass) sufficient to make 100; in the presence of minute traces of blood, the solution becomes purple or blue-red. (05 Mar 2000) |
| Rosenthaler-Turk reagent | A solution of potassium arsenate in sulfuric acid used in obtaining colour tests for various opium alkaloids. (05 Mar 2000) |