DWK Life Sciences 28014F-50 Flask,Volume,Classa,Blk Ptfe,50ml, KIMBLE®, 12/Unit - 09-457 | Genesee Scientific DWK Life Sciences 28014F-50 Flask,Volume,Classa,Blk Ptfe,50ml, KIMBLE®, 12/Unit - 09-457 | Genesee Scientific