Autosampler tubes & caps for AA, ICP, ICP-MS, ICP-OES, TOC, UV-VIS, HPLC, FIA, GPC, fraction collection and liquid handling applications Tubes are standard sizes and fit Cetac, Elemental Scientific and AIM Lab 60 and 90 position racks used by many instrument manufacturers including Aijiren, Lachat, Leeman Labs, PerkinElmer, Spectro, and Thermo