Wright's Stain
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This article is compiled based on the United States Pharmacopeia (USP) – 2025 Edition
Issued and maintained by the United States Pharmacopeial Convention (USP)
CAS RN®: 68988-92-1.—A mixture of methylene blue, methylene azure, and the eosinates of both, available as a solid and as a solution in methanol. Use a suitable grade.
[Note—If a solid is used, dissolve 6.0 g of Wright's stain powder (CAS# 68988-92-1, dark green powder) and 0.6 g of Giemsa stain powder (CAS# 51811-82-6, dark green to black powder or crystals) in 1000 mL of methanol. Stir overnight, and filter before use.]
