... HPLC vials. color is red, blue, white ,natural . septa ptfe/silicone septum 12mm dia 1.5mm thickness for HPLC 4ML vialsdiameter ... ,autosampler,chromatography,Agilent,waters machine2.glass vials with 8mm PTFE/silicone septa liner3.avaible volume:2ml,4ml,10ml,20ml,40ml,60ml4 ...