L-lactate production methods

Sodium lactate solution (867-56-1) is in the cooling system of law in the state of lactic acid and sodium hydroxide is added, place one week after concentration of approximately, and then alkali neutralization and dilution derived products.
Zinc lactate solution (867-56-1) potassium lactate (FCC-1992): Sodium lactate concentration ≥ 50%, 98.0% declared value label 102.0%; cyanide ≤ 0.5mg/kg; 20% aqueous solution pH of 6.5 to 7.5 ; chloride content of ≤ 0.05%; Arsenic (as As) ≤ 1mg/kg; Heavy metals (as Pb) ≤ 10mg/kg; Sulfate ≤ 0.05%; methanol and methyl ≤ 0.025%; oxalic acid, phosphoric acid, tartaric acid, or citrate test normal; Pb ≤ 5mg/kg; sugars normally.