1 Chemicals for industrial purposes, namely, clays and modified clays, for the treatment of all kinds of water, namely, ground water, surface water, namely, rivers, creeks, canals, ponds and lagoons, and water that is retained in storage facilities, namely, lakes, reservoirs, water tanks, swimming pools and aquariums; chemicals for industrial purposes, namely, water purifying chemicals consisting of clays and modified clays; chemicals for industrial purposes, namely, clays and modified clays, namely, clays in the form of wet slurry and clays in the form of powder, granules, tablets or pellets, for use in removing or isolating or transforming particular chemicals present in water, namely, ground water, surface water, namely, rivers, creeks, canals, ponds and lagoons, and water that is retained in storage facilities, namely, lakes, reservoirs, water tanks, swimming pools and aquariums