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brilliant green n.
An indicator dye that changes from yellow to green at pH 0.0 to 2.6 and is also used as a topical antiseptic and as a selective bacteriostatic agent in culture media.
a triphenylmethane dye of the malachite-green series (see malachite green) used in dilute solution as a topical antiseptic. Brilliant green is effective against gram-positive microorganisms. It has also been used to dye silk and wool. It occurs as small, shiny, golden crystals soluble in water or alcohol.