If all you are doing is transfering premade sterile gear into smaller vials this is how you do it. Use an alcohol wipe and clean the tops of all of the vials. The syringe is already sterile but you can wipe that too. Draw the gear with the large syringe out of the vial and place it into the smaller vials. You do not need a filter since you are transfering sterile gear. To make it easier you will have to inject air into the big vial since you are removing something from it and creating a vacum and suck air out of the smaller vials since you are filling them and there is no place for the air to go.