50% Reagent Alcohol. Specially denatured 100% alcohol with 50 parts of deionized water added to make this ready to use 50% graded alcohol. Suitable for use in clinical laboratory protocols that reference 50% alcohol or 50% ethanol. Ideal for processing and staining protocols in Histology and Cytology laboratories. Available for purchase in quantities of four 1-gallon rectangular F-style containers, designed for easy storage and dispensing.