PerkinElmer Low Pressure Piston for PerkinElmer Series 4, Integral 4000, PerkinElmer Series 200, 400, 410, Model 250 and 620 Pumps built after December 1989 - N2600104

Low Pressure Piston for PerkinElmer Series 4, Integral 4000, PerkinElmer Series 200, 400, 410, Model 250 and 620 Pumps built after December 1989. Low pressure pistons are made of sapphire for the highest quality hardness and surface.