2ml Snap Top HPLC Vial size is 11.6x32mm, which can compatible to most autosamplers, such as THERMO FISHER instrument. 2ml HPLC vial is available amber and clear glass. The bottom of vial is flat. It is convenient to put in autosampler. Aijiren supply 2ml snap top HPLC vial and pad in wholesale price. If the sample is scarce, 2ml snap top hplc