Oxalic Acid Powder 1kg Features and Benefits OXALIC ACID is a mildly acidic product or “sour” designed for use in commercial laundries for removing iron (rust) stains or yellowing of laundry caused by iron deposition from the water supply. OXALIC ACID is added to the washing machine in warm to hot water during a separate wash programme to remove heavy iron stains in clothing. The addition of a little ACTABRITE aids in performance during this cycle. OXALIC ACID is suitable for all fabrics including cottons, poly cottons, visa (Polyester), silk and wool. It is also recommended for laundering all types of linen including uniforms worn in food processing establishments Instructions for Use To Remove Rust and Iron Stains from Laundry: add the affected laundry plus 100-200g of product to the washing machine and run on a hot wash or hot pre-soak program. If possible allow some soaking time as this will enhance stain removal Do Not add any other chemical or detergent. Run the machine through the full wash cycle to throughly rinse the laundry To complete the process run the treated linen through a full wash cycle in the usual way with added detergent As iron staining may vary it may be necessary to repeat treatment process or increase the concentration of Oxalic Acid. Dilution To Remove Rust and Iron Stains from Laundry: To remove rust and iron stains from laundry add 100-200g of product to a wash or hot pre-soak program. As iron staining may vary it may be necessary to repeat treatment or increase the concentration.