Gas and liquid purification or filtration, contacting and delivery equipment and technology for commercial and industrial use, namely, gas and liquid purification and delivery systems comprising, reservoirs, pumps, filters, cleaners, degassers, extractors, scrubbers, strippers; polymeric and metallic membranes and cartridges for filtering or purifying liquids and associated manifolds; polymeric and metallic membranes and cartridges for filtering or purifying gases; metallic and organic media and cartridges for filtering or purifying liquids and gases including air; gas diffusers; filters for removing large particulate matter; gas and liquid membrane contactors for purifying, concentrating, and degassing liquids; heat exchangers for high purity fluids; and purifiers and filters for removing contaminants from slurries