This two-bottle fixed-ratio trigger sprayer automatically mixes and dilutes 5.25% bleach concentrate with tap water to make a 5000 ppm bleach disinfectant solution for use on hard, non-porous surfaces. The sprayer keeps the bleach separate from the water until you spray, keeping the 10% solution fresh and effective. Refill the water cartridge with tap water and lock in the disposable bleach cartridges and system is ready for use. Item 18105-00 kit includes six, 11-oz. bleach cartridges, two, 5000 ppm sprayer heads, and two 11-oz. water bottles.