DWK Life Sciences 28016-500 Flask,Volume,Classa,Raysorb,Ptfe,500ml, KIMBLE®, 12/Unit - 09-505 | Genesee Scientific DWK Life Sciences 28016-500 Flask,Volume,Classa,Raysorb,Ptfe,500ml, KIMBLE®, 12/Unit - 09-505 | Genesee Scientific