HPLC Septa Cap on Stock,Welcome to Inquiry. 1.5 ML/2ML 8-425 Screw Neck Autosampler Vials ND8. Details Products name 1.5 ML/2ML 8-425 Screw Neck Autosampler Vials ND8 Dimension 8mm Cap Color White and Black Septa details White,Red,Blue,1.5mm thickness. Material PP for Cap, PTFE/Silicone for Septa Package 100pcs/Pack Cap type Close top, Open top