1 Chemicals for use in industry and science; refrigerant gas for use in air conditioning, refrigeration, polyurethane, degreasing and cleaning solvents, gas purification, fumigants and sterilants, brazing and fluxing, medical inhalers, packaging, lubricants; nitrogen; carbon dioxide; helium; gas propellants for aerosols; chemical preparations for use in the manufacture of fuel; chemical preparations used in wine making; chemical preparations used in beverage bottling, packaging and repackaging