Shaoxing ALWSCI Technologies Co.,Ltd is one of the leading China solid cap & septa manufacturers and suppliers,Website:http://www.alwsci.com, welcome to wholesale cheap solid cap & septa from us. FEATURES1.Assembled in polypropylene caps2.Screw thread cap & septa that's ideal for general laboratory use and storage of samples.3.Chemically inert caps suitable for most chromatography and storage applications4.Top grade PTFE/silicone septa used for cleanliness.