DWK Life Sciences 242434 20 mm Extend Control Dpr Tip, LLDPE Blu, WHEATON®, 100/Unit - 09-1521 | Genesee Scientific DWK Life Sciences 242434 20 mm Extend Control Dpr Tip, LLDPE Blu, WHEATON®, 100/Unit - 09-1521 | Genesee Scientific