DWK Life Sciences 242431-01 20mm Extend Control Dpr Tip, LLDPE Nat, WHEATON®, 100/Unit - 09-1513 | Genesee Scientific DWK Life Sciences 242431-01 20mm Extend Control Dpr Tip, LLDPE Nat, WHEATON®, 100/Unit - 09-1513 | Genesee Scientific