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 702837 BM N20-H, si/bl, Sil w/PTFE bg, 45° 3.0 44,00 € 31020SP-2346 10mL SPME Clear Radius Bottom Vial, 23x46mm, 20mm 50,13 € 31018F-2346A 10mL Amber Flat Bottom Headspace Vial, 23x46mm, 18 56,50 €