Weigh 1.5g sample, accurate to 0.0002g, remaining with the requirements according to GB6284, drying temperature of 180 ± 2 ℃. Dry matter after drying the sample A, reserved for determination of Sodium lactate.
Take two parallel tests for the determination of the arithmetic mean of the results, the difference between the results of two parallel determinations shall not be greater than 0.1%.
Sulfate (SO4) Determination
Weigh 0.2g sample was measured according to lactic acid powder procedures sulphate (SOP-ZL-0402-00) detected as SO4 not exceed 1000PPM.
Chloride (Cl) Determination
Weigh 0.2g sample, according to the determination of chloride standard operating procedures (SOP-ZL-0401-00) detected as Cl does not exceed 200PPM.
Iron (Fe) Determination
Weigh 1.0g sample was measured according to standard operating procedures ferric (SOP-ZL-0403-00) detected as Fe does not exceed 10PPM.
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