Congo Red -1% Aqueous is supplied by Micromaster. It is available in the form of an intense red solution which is clear without any particles. It is advisable to store this product below 30°C in tightly closed container and away from bright light.

• Quantity provided: 125ml/Bottle

Congo red (1% aqueous) Solution is recommended as negative stain for bacteria and spirochaetes. Negative Staining Techniques work in a manner opposite to simple technique. Bacteria are mixed on a slide with an acidic dye such as congo red or the black stain, nigrosine, the mixture is smeared across the face of the slide and allowed to air dry. Because the stain carries a negative charge, it is repelled by the bacteria, which also have a negative charge. The stain gathers around the cell which often appears larger than stained cells.