USP Methylene Blue 1% Aqueous Solution 100ml Glass Pipette Bottle *Free PP* - Product Code: RRSP99-B-PIPETTE - Pack Size: 100ml Pipette Description USP grade Methylene Blue powder in a 1% solution with Distilled water. Methylene Blue Stain is a versatile and widely used dye that is provided in a convenient 1% aqueous working solution. It comes in a 100ml glass dropper bottle with a pipette, allowing for easy and precise application. This stain finds numerous applications in various fields. In microbiology, it is particularly useful for observing metachromasia in bacterial species such as Corynebacteria. Metachromasia refers to the phenomenon where certain bacteria exhibit a colour change when stained with Methylene Blue, providing valuable information about their .