Something I saved in my notepad.... I think it was originally posted by LMD, but I could be wrong.....
In a 1cc syringe, draw up 0.12cc of distilled white vinegar and 0.88cc of distilled water.
Remove the needle, put a 0.22µM sterile filter, add a sterile needle, and filter that into a sterile vial.
Well you could also use a 3cc syringe with 0.36cc of AA and 2.64cc of water.