Jul 31, 2020 · Aijiren offers two types of pre-slit Septa, single slit and cross slit, such a slit can guide the injection needle accurately punctured Septa into the HPLC Vials, without a thin automatic injection broken, or the cushion falls off into the HPLC Vial contaminated sample. Non-slit septas help reduce carryovers from vials to vials because the re