Washed Sand See Sand, Washed.
Water, Ammonia-Free, H2O18.02Use High-Purity Water as defined for Chemical ResistanceGlass Containers under Containers 661.
Water, Carbon Dioxide-Free See Water, in the introductory section.
Water, Deaerated See Water, in the introductory section.
Water Vapor Detector Tube A fuse-sealed glass tube so designed that gas may be passed through it and containing suitable absorbing filters and support media for the indicator, which consists of a selenium sol in suspension in sulfuric acid.
Wright's Stain [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. [noteIf 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.]