AquaSalt 4035AQUAFG 40 lb Food Quality Salt for Chlorine Generators - Evaporated Food Quality AquaSalt is intended for use in swimming pools with a chlorine generator or salt water sanitizing system and is not for human consumption. AquaSalt is greater than 99% sodium chloride or NaCl. The purity and crystal size are designed to produce the fastest dissolve rate in swimming pools and spas with chlorine generators.