Product description

Neutral red is a dye used in histology for staining nuclei red and it is also a pH indicator (transition: pH 6.8 - 8.0 red to yellow). As such it is used in microbial culture media for differentation of bacteria. For example MacConkey agar contains Neutral red and lactose (the sugar in milk). Acidification by lactic acid turns on the Neutral red. Therefore, colonies formed by bacteria that ferment lactose into lactic acid will turn red and stand out from the pale colonies of non-lactose-fermenting bacteria. Neutral red is also used in cell viability tests based on the ability of viable cells to incorporate and bind Neutral red. (CAS No. 553-24-2, Biosynth Cat. No. N-2525)
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CAS Registry Number 553-24-2
Categories Contract Services - Bio ServicesCell Biology
Supplied from Switzerland
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