aijiren is one of global manufacture of laboratory consumables. So aijiren has Strict quality control system on HPLC Vial and Cap.aijiren, which is China HPLC Vial and Cap manufacturer, put forward standard for all of their manufactured 11.6x32mm hplc vials including the following items:1.5ml 8-425 screw thread chromatography vials, 2ml ND9 large opening short screw vials, 1.5ml 11mm crimp