HomeHPLC - Mass SpecWB194WB194 WB194 Add to quote This product is already in your quote request list. Browse the list Description Description WB Scientific Part WB194 OEM Part N2600124 Models Series 4, Int. 4000, Series 200, 400, 410, Model 250 and 620 Pumps built after December 1989 Description: Piston, High Pressure