Mineral substances in the nature of expanded perlite for use as filtering media in non chemical filtering processes for agriculture and horticulture; industrial minerals, namely, expanded perlite for use as filtering media in non chemical filtering processes; mineral perlite of volcanic origin, namely, to filter all type of liquids for agriculture and horticulture; all the aforesaid expanded perlite only for use as internal filtering media for vacuum and pressurized filters

CERAMIC PARTICLES IN THE NATURE OF EXPANDED CLAY AGGREGATES FOR FILTRATION AND PURIFICATION OF WATER, DRINKING WATER, WASTE WATER AND SEWAGE

Water purifying chemicals, namely, ceramic particles for use as a filtering media in filtering and purifying water, drinking water, waste water and sewage water