Standard opening 2ml GC-MS vials factory wholesales supplier 2ml hplc autosampler vials with label for hplc system 2. 9-425 screw top vials is 40% larger opening than standard narrow opening vials, 2ml HPLC Vials with Unique Thread Design Ensures Consistent Seal and Can Be Reused, Not Volatile, Easy to Use 3. 2ml Amber autosampler vial,12mm Diameter, 32mm