9-425 screw neck autosampler vial is packaged in PP box, 100pcs/pack; Screw cap and with septa is packaged in plastic bag, 100pcs/pack; Insert for 2ml glass Vials, screw top, clear glass (vial only), volume 4 mL, clear glass vial . Vials, screw top (4mL) are mainly used to inject samples from an autosampler. Autosampler needle pierces through