HomeHPLC - Mass SpecWB331WB331 WB331 Add to quote This product is already in your quote request list. Browse the list Description Description WB Scientific Part WB331 OEM Part 700010661 Models 2690, 2695, 2790, 2795, 2796, 2690D, 2695D, Alliance®, ACQUITY® Arc™ QSM-R Description: Plunger, Sapphire, ACQUITY® Arc™ (2/pk)