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１．眼观法。真正的氯化钾纯品为白色结晶体，市场上出售的氯化钾为黄色或红色颗粒，并有白色晶体，这些颜色主要是由于氯化钾内含有杂质而造成的，假氯化钾紫红色粉沫。或有少量白色晶体，形状如紫红色砖沫。 ２．水溶法。氯化钾易溶于水，放在水里用木棒搅拌，很快就会溶解，
1. Eye view method. The real pure potassium chloride is white crystals, the sale of potassium chloride on the market for the yellow or red particles, and white crystals, these colors are mainly due to impurities in potassium chloride caused by pseudo potassium chloride fuchsia Powder Or a small amount of white crystals, such as purple-red brick foam. 2. Water-soluble method. Potassium chloride soluble in water, put it in the water with a stick stir, and soon will dissolve,