GRIP STOPPERS FOR CENTRIFUGE TUBES, ROUND BOTTOM, LDPE (THG) Back Catalog number: 9400787 Availability: In the manufacturer's stock Price on request - + Recommended 604070-09 9mm x 0.040" Red PTFE/Silicone w/Slit Septa 39,99 € 702041 N 9 septa, Red Rubber/FEP, pk/100 9,31 € V0321100 11mm Septa,Red PTFE/White Silicone ,0.050″thick 12,03 €