Five Star Star San is the sanitizer preferred by homebrewers! Star San is a liquid acid based no rinse sanitizer which contains beer brewing nutrients. It is flavorless and odorless. For a powdered no rinse sanitizer consider Aseptox. For a stronger cleaning agent consider Diversol.
Mix just one ounce of Star San with 5 gallons of water and apply solution to desired surface. Requires just one to two minutes of contact time. Drain surface. No rinse necessary.
This product does tend to foam, which has advantages and disadvantages. The foaming action helps to sanitize cracks and crevices, but you need to allow extra time for draining. The foaming action is perfect for plastic fermenters.
You can minimize the foaming effect by adding Star San to the vessel after the water has been added, and by siphoning as opposed to pouring the solution between vessels.
Since Star San is acid based, contact with soft metals should be kept to a minimum. Kept in a sealed container, a Star San solution will stay effective for as long as three to four weeks.