18mm Open Top Screw Cap Headspace Sampler
Caps are made of magnetic precision metal.
Zhejiang ALWSCI Technologies Co.,Ltd is one of the leading China 18mm open top screw cap manufacturers and suppliers, welcome to wholesale cheap 18mm open top screw cap, headspace vial rack from us.
1.Caps are made of magnetic precision metal to exact manufacturing tolerances and lined in a controlled manufacturing environment.
2.Pre-slit septa are easier to pierce with needles.
3.Pre-assembled caps and septa are convenient and minimize contamination from handling.