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One tablet dissolved in 50 ml of sterile glass distilled water will produce the equivalent of a 0.005 per cent solution of resazurin. Use 1 ml of this solution to 10 ml of milk for each test.
R 1238 (OTTO) Resazurin, tablets Cas 62758-13-8 - used mainly as an oxidation-reduction indicator in cell viability assays for bacteria and mammalian cells.