Immunol® S-6-H is a detergent type cleaner for soak tank cleaning and degreasing of ferrous and non-ferrous parts. It emulsifies oils such as drawing compounds and rust preventives, and removes mill soils and smut very effectively. It may also be used for general purpose cleaning as a “bucket” solvent to replace more flammable or toxic materials. If used on aluminum, extended immersion times (one hour or more) produce darkening. Use Immunol® S-6-I as an alternative for aluminum.