let me know if i am wrong but i was thinking a little alcohol on a q tip and swab around the inside and let evaporate
I want to transfer amps to a multi use my only problem is the vial and stopper i have are not already sealed and sterile. What would be the best method
Throw them in the garbage and buy new ones. You can buy new ones for $6, is that not worth avoiding any contamination?
Clean stopper and vial with purified water for injection (8Mohm/cm conductance) to remove particulates under a laminar flow hood. Then autoclave.