Liquid detergent compound containing phosphoric acid and nonionic surfactants ,used for rust removal and as a surface brightener.
Directions for Use and Dose Rates
Cleaner 645 should always be used in a plastic bucket. Acid should always be added to water, never the reverse . Remove loose dirt , rust scale, oil and grease prior to using cleaner 645.
Apply cleaner 645 to surfaces to be cleaned or pickled as follows:
.For severely corroded surfaces and pickling of welding repairs, use neat 50% solution .
.For less severely corroded or soiled surfaces and tarnish on copper and brass use a solution of 20-50% and rinse off surface after 15-40 minutes with water.
On aluminium , use a solution of 10-30 % but rinse off surface approximately 5 minutes after application.
For removal of rust stains on painted surfaces. A solution of 10-30 % should be sufficient .Rinse off with water 15-20 minutes after application.
.For removal of rust stains on ceramic tiles, enamels, porcelain ,glass, etc.Use a solution of 20-50% depending on stains and soiling .Rinse off with water after 20-40 minutes.
.For removal of cement and lime , apply 50% solution and high pressure wash after 30-40 minutes.
.For removal of flash rust in cargo lines and tanks and discoloration of stainless steel and epoxy coateel tanks, recirculate a solution of 5-10% metal Brit H.D. when injected use a 5% solution Recirculate or inject until residue is removed.
