Cleaning & Sanitizing Techniques - WineMakerMag.com- vĩnh viễn sanitizer proce ,This sanitizer uses phosphoric acid and surfactants to kill microorganisms on clean surfaces. The surfactants in diluted sanitizer may leave foam or bubbles when it is poured out, but that small residue represents no significant risk to your wine. Use 1 oz. (29 mL) in 5 gallons (19 L) of water with a one- to two-minute contact time.Cleaning & Sanitizing Techniques - WineMakerMag.comThis sanitizer uses phosphoric acid and surfactants to kill microorganisms on clean surfaces. The surfactants in diluted sanitizer may leave foam or bubbles when it is poured out, but that small residue represents no significant risk to your wine. Use 1 oz. (29 mL) in 5 gallons (19 L) of water with a one- to two-minute contact time.