The comprehensive range of vials includes micro and fused-inserts, standard 2ml Waters®, Perkin Elmer®, CTC and Thermo Fisher Scientific) for both vial CeiExpert Dionex, Hitachi, Knauer, PerkinElmer, Caps are made of high quality polypropylene to ... 250ul 5.7 x 29 mm glass insert w/PP bottom spring.