4ml 13-425 Screw Thread HPLC Vial Cap With Septa
The 13mm septum uses only high-quality materials to ensure proper function. It can be slit in advance to facilitate needle penetration. It is especially suitable for liquid chromatography applications. It is guaranteed that the septum will not fall into the sample during the sampling process. In the bottle. This septum is made of PTFE/silicone fusion, they have excellent inertness and can be used for multiple injections.
The vial cap corresponding to the 4ml screw vial combines innovation with time-saving convenience. The chemically inert bottle cap produced by this patented method truly combines the septum and the cap at the molecular level, which can avoid excessive evaporation and keep the sample bottle properly sealed. The thickness of the 13mm septum is 1.5mm, and the PTFE is about 0.1mm.