... and organic solvents, liquid or gas covering the complete acid,neutral and alkali range up to pH 11,exept ... g.calcium chloride,Soduim Acetate,ammonia water,Caustic soda,concentrated sulphuric acid,aluminium hydroxide; b:Filtration of catalyst and decoloration ... industry,separation of acid mist,high temperature dusty gas in environmental protection industry; e:Filtration of fertilizer industry,e.g ...