A chemical compound with a sour or bitter taste that unites with an alkali to form a salt. Acids have a pH value less than 7.
Acids play an important part in cleaning and neutralizing fabrics.
Fibers that have been cleaned with alkaline detergents will generally stay cleaner longer, be better prepared to receive protectors, and have less chance of bleeding or browning if they are neutralized with an acid based product. Fabrics and carpet that have yellowing or browning may be treated with acid based products with results being removal or lessening of the browning or yellowing. Acids will neutralize alkaline spills or accidents such as urine or detergent spills. Water stains and ringing may also be removed by acid agents. Fab Set - Acid rinse and neutralizing agent.