Description
Phosphoric acid (AKA orthophosphoric acid or H3PO4) is a mineral inorganic acid that can be used as a non-foaming/non-rinse sanitiser when diluted to water to a concentration of 1mL/2L.
Phosphoric acid is also an excellent chemical to use when passivating stainless steel.
Phosphoric acid can also be completely motabilised by yeast and will also act as a yeast nutrient if it ends up in your fermenter.