Wide Opening hplc insert for hplc vials laboratory vials supplier China laboratory vials supplier’s Guide to Vial Selection o-insert for 1.5mL screw vials,100/packMicr Part nuer Min. sample vol Max. sample vol Usage Asseled plastic spring Type 220-91521-04 30 uL 200 ul ND9 wide opening vials k Conical 1.5 mL aijiren screw vial kit 1.5 mL clear screw