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| | AllRefer.com - litmus (Chemistry) - Encyclopedia (Site not responding. Last check: 2007-09-17) |
 | | litmus, organic dye usually used in the laboratory as an indicator of acidity or alkalinity (see acids and bases). |
 | | Commonly, paper is treated with the coloring matter to form so-called litmus paper. |
 | | Litmus is extracted, chiefly in the Netherlands, from certain lichens (see archil), which are mashed, treated with potassium carbonate and ammonia, and allowed to ferment. |
| reference.allrefer.com /encyclopedia/L/litmus.html (204 words) |
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