5) Delivery information: Kits include glass Crimp top headspace vial, 20mm magnetic (or not) Aluminum crimp caps PTFE/Silicone Septa. Company Introduction Founded in 2007, Zhejiang Aijiren, Inc. specialized in chromatography consumables, such as autosampler vial for HPLC, headspace vial, GC vials, micro inserts, septa and caps, syringe filter, etc.