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litmus red test paper

См. также в других словарях:

  • Test paper — Test Test, n. [OE. test test, or cupel, potsherd, F. t[^e]t, from L. testum an earthen vessel; akin to testa a piece of burned clay, an earthen pot, a potsherd, perhaps for tersta, and akin to torrere to patch, terra earth (cf. {Thirst}, and… …   The Collaborative International Dictionary of English

  • Test — Test, n. [OE. test test, or cupel, potsherd, F. t[^e]t, from L. testum an earthen vessel; akin to testa a piece of burned clay, an earthen pot, a potsherd, perhaps for tersta, and akin to torrere to patch, terra earth (cf. {Thirst}, and… …   The Collaborative International Dictionary of English

  • Test act — Test Test, n. [OE. test test, or cupel, potsherd, F. t[^e]t, from L. testum an earthen vessel; akin to testa a piece of burned clay, an earthen pot, a potsherd, perhaps for tersta, and akin to torrere to patch, terra earth (cf. {Thirst}, and… …   The Collaborative International Dictionary of English

  • Test object — Test Test, n. [OE. test test, or cupel, potsherd, F. t[^e]t, from L. testum an earthen vessel; akin to testa a piece of burned clay, an earthen pot, a potsherd, perhaps for tersta, and akin to torrere to patch, terra earth (cf. {Thirst}, and… …   The Collaborative International Dictionary of English

  • Test tube — Test Test, n. [OE. test test, or cupel, potsherd, F. t[^e]t, from L. testum an earthen vessel; akin to testa a piece of burned clay, an earthen pot, a potsherd, perhaps for tersta, and akin to torrere to patch, terra earth (cf. {Thirst}, and… …   The Collaborative International Dictionary of English

  • Litmus test (chemistry) — Litmus is a water soluble mixture of different dyes extracted from lichens, especially Roccella tinctoria . The mixture has CAS number 1393 92 6. It is often absorbed onto filter paper. The resulting piece of paper or solution with water becomes… …   Wikipedia

  • litmus paper — n paper colored with litmus and used as an acid base indicator * * * bibulous paper impregnated with a solution of litmus, dried, and cut into strips. If slightly alkaline, the paper is blue and is used as a test for acids, which turn it red; if… …   Medical dictionary

  • Litmus paper — Litmus Lit mus, n. [D. lakmoes; lak lacker + moes a thick preparation of fruit, pap, prob. akin to E. meat: cf. G. lackmus. See {Lac} a resinous substance.] (Chem.) A dyestuff extracted from certain lichens ({Roccella tinctoria}, {Lecanora… …   The Collaborative International Dictionary of English

  • Litmus — Lit mus, n. [D. lakmoes; lak lacker + moes a thick preparation of fruit, pap, prob. akin to E. meat: cf. G. lackmus. See {Lac} a resinous substance.] (Chem.) A dyestuff extracted from certain lichens ({Roccella tinctoria}, {Lecanora tartarea},… …   The Collaborative International Dictionary of English

  • litmus — blue dye stuff obtained from certain lichens, early 14c., from M.Du. lijkmoes (Du. lakmoes), from lac (see LAC (Cf. lac)) + moes pulp. Another theory is that it represents O.N. litmose, lit. lichen for dying, from O.N. lita to dye, to stain, from …   Etymology dictionary

  • litmus test — noun 1. a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid base indicator • Syn: ↑litmus • Hypernyms: ↑acid base indicator • Substance Holonyms: ↑litmus paper 2.… …   Useful english dictionary

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