11 298 12 Screw cap HPLC, GL 45, 4 ports, complete (GL 45 screw cap, 4 x M8 black screw caps, 12 x silicone seals for 1.6, 3.2 mm tubing or blanks) 2 DURAN® MULTIPORT CONNECTOR CAP GL 45 HPLC 4-PORTS Blue, PP A holder for the safe storage of spare 12 mm diameter pH electrodes. Consisting of a 45 GL