9 laboratory equipment; namely, laboratory glass ware, pipets including disposable pipets, dispenser pumps and sprays, glass extraction thimbles, filter thimbles, chromatography columns, multi-filtration units, disposable filter holders, tubes and incubation trays; separation equipment; namely, filtration apparatus for scientific purposes, (emergency water processing apparatus), apparatus for reverse osmosis, chromatographic and electrophoretic apparatus for scientific, medical and engineering purposes; namely analytical litmus papers, glass fiber filter papers, apparatus for simultaneous multiple filtration of small sample volume, having particular application in recombinant genetic and protein research and accessories for separation equipment; namely, holders, stands, pressure vessels, pumps, hook-up equipment; namely, pressure lines, pressure-line fittings, and pressure valves, pressure-reducing valves, reducing valves, over-pressure check valves, and adjusting valves, seals, implements and storage vessels consisting essentially of glass, metal or high-polymer materials are sold as a unit