liquid transfer components of chemical analytic equipment, namely, High-Performance Liquid Chromatography (HPLC) - tubing; fittings; packed columns; guard columns; precolumn filters; seals; pump components, namely, pumpheads, pistons, plungers and seals; check valves; priming valves; priming adapters; detector source lamps; filters; manifold ball seals; injector components, namely, syringes, seals and needles; pressure regulators; sample processor components, namely, syringes, needles, seals, washers and frits, all for HPLC instruments; HPLC maintenance kits comprising inlet cartridge check valves, outlet cartridge check valves, replacement cartridges, pistons, pump seals, filters and fittings; and HPLC fitting kits comprising tubing, nuts and ferrules