11mm snap caps, septa, and vials can be used with our standard crimp top caps Vials are manufactured of Clear, Type 1 Class A or Amber, Type 1 Class B borosilicate glass and include a write-in patch for sample identification. Caps are made of high quality polypropylene to exact manufacturing tolerances and lined in a controlled manufacturing environment. Our septa use only the highest quality materials to ensure proper function and can be pre-slit to ease needle penetration. Designed for multiple injections and/or longer sample cycles - for both GC and LC applications. High quality silicone compounds are used to ensure proper re-sealing and reduced chances of coring. 005ATchinalabsupplies.cn