Nigrosin Water Soluble C.I. 50420

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£9.95 to £31.25

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Variation ID		Product Code	Pack Size	List Price
3078	photo_camera	RRBD43-U	10g RRBD43-U	£9.95
3079	photo_camera	RRBD43-W	25g RRBD43-W	£13.95
3080	photo_camera	RRBD43-2W	50g RRBD43-2W	£15.95
3081	photo_camera	RRBD43-X	100g RRBD43-X	£31.25

Nigrosin can be used for negative Staining of bacteria. The shapes and sizes of the organisms are seen as colour-free outlines against the dark background. An advantage of using this method, rather than regular positive stains like methylene blue or carbol fuchsin, is that prior fixation by heat or alcohol is not needed, so the organisms are seen in more life-like shapes. Furthermore, negative staining with nigrosin can reveal some microorganisms that cannot be stained by regular methods