Polyaluminum chloride, or PAC(s), is not a single solution but a large line of inorganic polymers known by their % strength and basicity. The variety of PACs can be tailored to individual water plant type and source water. With a higher price per pound of solution, PACs can still out perform other coagulants due to their superior performance and reduced fees rate.
PACs are NSF Certified for drinking water treatment at max dose of 250 mg/L.