SPEC HIB SWT is specially designed to effectively stop the development of bacteria, microorganisms, shell embryo, and plant life commonly found in seawater. Being biodegradable, it does not contravene regulations limiting oil in discharge water. SPEC HIB SWT disperses marine growth and reduces corrosion in seawater cooling systems, tanks and sea water systems. Available in UN approved 5 gallon pails and 55 gallon drums.