Barquat 50-28 and Barquat 80-28 are blends of alkyl dimethyl benzyl ammonium chlorides. When used as an active ingredient in FIFRA1 registered formulations such as hard surface disinfectants, sanitizers and/or certain types of water treatment formulations, these products have been found to provide superior biocidal action against a broad spectrum of microbial organisms such as: bacteria, fungi, viruses, and algae. This “first” generation quaternary ammonium compound delivers potent germicidal action in most applications.