网页Aijiren supply spare caps for all autosampler vials. Choose from a variety of cap and septa to suit your experiment. 8-425 Screw top PP cap, 9mm Screw PP cap, 10-425 wide opening screw cap, 13-425 standard screw cap and 24-400/ 24-410 screw cap are available in Aijiren. Those Screw caps are made of polypropylene.