Wide Opening hplc insert manufacturer lab vials supplier India. -Screw top vial,2 ml,glass 0.2ml insert|Vial,screw top,polypropylene,with glass insert,250 µL,100/pk. Vial size12 x 32 mm (12 mm cap) Manufactured from polypropylene,meeting requirements of 21 CFR 177.1520 Wide opening glass/plastic vials have a glass flanged insert molded to the inside,so sample only comes in contact