70% Reagents Alcohol. Methanol free denatured alcohol (Methyl alcohol is a known poison that can cause serious health conditions) and suitable for use in clinical laboratory protocols. This denatured alcohol has been formulated using MasterTech 100% Reagents Alcohol diluted with 30% purified water. Ideal for processing and staining protocols that reference 70% alcohol in Histology and Cytology laboratories. Available for purchase in 1-gallon rectangular F-style containers designed for easy storage and dispensing.