Magnetic Screw Seals ND18, Silicone blue/PTFE white, 1,3mm, pk/100 Back Catalog number: 18031309 Availability: In the manufacturer's stock Price on request - + Recommended 31018R-2346A 10mL Amber Rounded Bottom Headspace Vial, 23x46mm, 52,60 € 702866.2 Vial N18-10, SC, a, 22.5x46, rounded 30,87 € 31020A-2346A 10mL Amber Headspace Vial, 23x46mm (for CTC PAL), 52,92 €