Salt Tablets Sodium Chloride. Water Softener Salt Table PARAMETERS CHEMICAL ANALYSIS: Purity (Sodium Chloride Weight %): 99.9 % NaCl Water Insoluble matters: 0.2 % Calcium Bicarbonate: 0.035% Calcium Carbonate: Absent Calcium Sulfate: 0.2% Magnesium Sulfate: 0.09% Magnesium Chloride: 0.05% Moisture: 0.09 % Packaging is totally flexible and available according to customers' requests including 25 kg / 50 kg PE or PP Our products are safe, effective, and backed by scientific research. If you are interested in learning more about our salt tablets, please do not hesitate to contact us. We would be happy to answer any questions you may have and provide you with more information about our products.