Phenol Red

Triphenylmethane dye-type indicators are a class of organic color-change reagents based on triarylmethane or related lactone/quinoid structures. They are widely used in acid-base titration, non-aqueous titration, complexometric titration, protein assays, histological staining, microbiological ...

In biological experiments, “red-series reagents” can refer to chromogenic or staining reagents that appear red in visible light, as well as fluorescent probes and labels whose emission falls in red or far-red channels. Because “red” may denote apparent color, precipitated chromogenic ...