Diamond 40lb K-Life Potassium Chloride D.Crystal,100012447, 220928 Sodium Shield Potassium Chloride Is A Low Sodium Alternative To Traditional Water Softener Salts Made With Up To 99.1% Pure Potassium Chloride (Kcl) These Crystals Contain Low Insoluble Content To Keep Your Water Softening Unit Running Smoothly Sodium Shield Potassium Chloride Is A Low Sodium Alternative To Traditional Water Softener Salts These Crystals Contain Low Insoluble Content To Keep Your Water Softening Unit Running Smoothly