Aijiren pp caps for 2ml 9-425 screw-top vials with caps lined with PTFE/Silicone septa are used in chromatography analysis, it can be used in HPLC/GC Application. Size: 9mm. Cap Material: PP. Color: Blue or Customized. Application: For 2ml 9-425 Screw Top Vials. Matching Brands: Waters