300 µL clear polypropylene vial only, 100/pk. 12 x 32mm overall dimensions with clear 300 µL conical polypropylene insert. For any LC or GC autosampler with a 12 x 32mm rack. Decrease the needle stroke by 3-4mm to prevent needle damage. Requires cap 220-97331-27 with non-slit PTFE/silicone septa, cap 220-97331-28 with pre-slit PTFE/silicone septa, or PE septumless cap 220-91521-12. Note that the septumless cap is a thin membrane and NOT resealable after punctured by the autosampler needle. For multiple injections from the same vial, a cap with a PTFE/silicone septum is recommended. Replacement for 220-91521-05. Alternative for the no longer available 750uL polypropylene vial 220-97331-00.