Iodophor is a powerful sanitizer. Reduces spotting, filming and streaking in warm or cold water (not for use in hot water.) This specially formulated liquid sanitizer is great for sanitizing all homebrewing and winemaking equipment. Use 1/10th ounce per gallon water for 12.5 ppm sanitizing solution. or 1tablespoon per 5 gallons. Also available in gallon, 32 ounce and 4 ounce containers.