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 31020A-2346A 10mL Amber Headspace Vial, 23x46mm (for CTC PAL), 56,00 € 320020A-2375 20mL Clear Headspace Vial, 23x75mm (for CTC PAL, P 50,93 € 18031414 ND18Magnetic Screw Cap, Sil/PTFE (white/blue),1.5mm, pk/100 Price on request