DWK Life Sciences 18-4102 18Mm Blue Mag Pp S/C Rbutyl/Ptfe .125, WHEATON®, 100/Unit - 09-1127 | Genesee Scientific DWK Life Sciences 18-4102 18Mm Blue Mag Pp S/C Rbutyl/Ptfe .125, WHEATON®, 100/Unit - 09-1127 | Genesee Scientific