Cap Vial Type Glass Descriptiom PartNumber 9mm 2ml MS Certified, 12 x 32m, write-on patch, screw Clear 9mm blue cap, LC Clean clear silicone / clear PTFE 009-18-6290-0104-2-00-00-ILT 9mm 2ml MS Certified, 12 x 32m, write-on patch, screw Clear 9mm grey cap, LC Clean clear silicone / clear PTFE pre - slit 009-18-6289-0104-2-00-00-ILT