2ml autosampler vials screw thread for HPLC sampling . HM-0715 1.5ml wide opening short screw-thread vial with write-on spot,clear 11.6*32mm USP 1 expansion 33 HM-4453 1.5ml wide opening short screw-thread vial,aijiren 11.6*32mm USP 1 expansion 51 HM-4432 1.5ml wide opening short screw-thread vial with write-on spot,aijiren 11.6*32mm USP 1 expansion 51 HM-0559 250uL polypropylene insert 5.8