GRIP STOPPERS FOR CENTRIFUGE TUBES, ROUND BOTTOM, LDPE (THG) Back Catalog number: 9400787 Availability: In the manufacturer's stock Price on request - + Recommended 606050-13 13mm x 0.060" Red PTFE/Silicone Septa, pk/100 21,10 € 606550-08 8mm x 0.065" Red PTFE/Silicone Septa, pk/100 14,65 € 606MSLB-11 11mm Diameter Low Bleed Yellow PTFE/Cream Silicone 22,24 €