VWR Vwr Stopper Red 24/40 Pk100 Unit CS. Excellent recovery and consistent performance make this an ideal stopper for use with dry powders or in the generation of gas-generation or liquid phase reactions . The dual valve design allows the stoppers to function even after reaching the full set opening and allows rapid recovery of the full air/gas mixture after the pump has been exhausted. Excellent recovery rate provides useful vacuum after the pump has been shut off. Specifications for VWR Vwr Stopper Red 24/40 Pk100 20253: Manufacturer: Advantech Manufacturing Color: Red Package Contents: VWR Vwr Stopper Red 24/40 Pk100 20253 / 89097-544 The VWR Vwr Stopper Red 24/40 Pk100 20253 is a quality addition to the Advantech Manufacturing lineup. For more great deals on Laboratory Consumables by Advantech Manufacturing please browse our Advantech Manufacturing Laboratory Consumables page. VWR Vwr Stopper Red 24/40 Pk100 20253 Unit CS