Silicon; Chemical additives for lubricants; Chemical analysis kit for testing swimming pool water; Chemical polymeric additives for lubricants; Chemical preparations for testing swimming pool water; Chemicals, except pigments, for the manufacture of enamel; Chlorine for swimming pools; Reagent bearing test strips for testing swimming pool water; Shock treatment chemicals for use in swimming pools and spas; Silicone fluids; Silicone surfactants for use in agricultural sprays and adjuvants; Sur...