Albert’s Stain B

Albert's Stain B is used for observing metachromatic granules.

Albert's Metachromatic Stain demonstrates the presence of metachromatic granules found in Corynebacterium diphtheriae. The granules stain purple-black against the light green counterstained cytoplasm. This helps to distinguish Corynebacterium diphtheriae from most of the short non-pathogenic diphtheroides which lack granules.

Reagent / Contents:

Appearance:  Dark amber coloured solution.