13mm screw thread caps, septa, and vials are designed especially for use with Agilent's and otherrotating or robotic arm samplers . 4ml, 13*1.5mm vials are manufactured of Clear, Type 1 Class A or Amber, Type 1 Class B borosilicate glass and include a write-on patch for sample identification. Caps are made of high quality polypropylene to exact manufacturing tolerances and lined in a controlled manufacturing environment . Our septa only use the highest quality materials to ensure proper function and can be pre-slit to ease needle penetration. Designed for single injection and/or short sample cycles, particularly for LC applications Absence of elastomer layer reduces potential for contamination. 005ATchinalabsupplies.cn