DWK Life Sciences WPFPC0250S Shake Flask PC, 250mL Flat base, Sterile, WHEATON®, 12/Unit - 09-1033 | Genesee Scientific DWK Life Sciences WPFPC0250S Shake Flask PC, 250mL Flat base, Sterile, WHEATON®, 12/Unit - 09-1033 | Genesee Scientific