Specifications include, but are not limited to: NSF/ANSI 60 certified potable grade liquid ammonium sulfate for use in drinking water treatment. A clear, pale yellow liquid containing between thirty-eight (38) to forty (40%) Sulfuric Acid Di-ammonium by weight (10% Ammonium Sulfate). With a pH 3.0 – 6.0, specific gravity of 1.21 - 1.23 ± 0.05. Material shall not freeze above 10°F. Material shall be free of any foreign materials or chemical precipitates. The liquid ammonium sulfate solution supplied in accordance with these specifications shall contain no soluble material or organic substances in quantities capable of producing deleterious or injurious effect upon the health of those consuming water that has been properly dosed with the liquid ammonium sulfate solution.