Caps are molded to ensure consistency in fit, thread specifications and overall dimensions. Autosampler compatibility: Aijiren 1050/1090A, / , A/ , /7985A/ Hitachi AS-1000, AS-2000, AS-4000, L7200/L7250 LEAP Technologies : CTC LC PAL, GC PAL, CombiPAL, HTC PAL/HTS PAL PerkinElmer : Autosystem/AS-2000/XL, Clarus 500/600, ISS-100, 200 Shimadzu LC Autosamplers : SIL