Sodium Chloride Digital Refractometer is an inorganic ionic compound with a white crystalline appearance and is the main component of table salt. Sodium chloride soluble in water, glycerol, slightly soluble in ethanol (alcohol), liquid ammonia; Insoluble in concentrated hydrochloric acid. Impure sodium chloride is deliquescent in air. Sodium chloride solution is relatively stable, its aqueous solution is neutral, the industry generally uses the method of electrolytic saturated sodium chloride solution to produce hydrogen, chlorine gas and caustic soda (sodium hydroxide) and other chemical products (generally known as chlor-alkali industry) can also be used for ore smelting (electrolytic molten sodium chloride crystal to produce active sodium metal), medical use to prepare normal saline. Life can be used for condiments.

Sodium Chloride Digital Refractometer can measure the refractive index and concentration of sodium chloride at the same time, which is mainly used for rapid detection of the concentration of various sodium chloride solution products.