(also called muriatic acid) Hydrochloric acid that is 31.45%. (Concentrated HCl is 37%). It is used for controlling pH and total alkalinity in pool and spa water, and for various cleaning needs. It is also used for acid washing.

(31.45% hydrochloric acid) - also called muriatic acid - It is used for lowering pH, total alkalinity and for various cleaning needs. It is also used for acid washing.

A liquid chemical (muriatic or hydrochloric acid) used to reduce pH and total alkalinity. A dangerous, corrosive chemical that should be handled with care.