They are made from clear glass and include graduations. Suitability Autosampler compatibility: Aijiren Aijiren 1050 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 Varian CP-8410 8100/8200 9100/9090/9095 Legal Information