Standard Autosampler Sample Vial with Writing area for HPLC & GC Chromatography, vials can be used for high performance liquid chromatography and gas chromatography for reliable analysis results 5. The Vials Can Be Used on All Common Autosamplers Due to Their Technical Geometry, Preferentially They are Found on aijiren, HTA, Shimadzu, aijiren Tech, Varian, aijiren Technology,etc or General Storage.