Just sterilize the vial. Come on guys this stuff is not that hard. The test vial still has oil residue in it. Remove the cap and rubber stopper. Wash it with soap and water rinse very well and make sure no soap residue is left. Clean with rubbing alcohol. Allow to dry fully. Bake in I've on 350 for 30 minutes. Clean rubber stopper with rubbing alcohol. Now it's sterile and ready to use.