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IO-Star is an iodine based no-rinse sanitizer. 1-2 minute contact time when used in the concentration of 1 oz per 5 gallons. It will slightly stain vinyl tubing and some plastic parts over time but will not affect the functionality of the tubing at all.
Note: Five Star has discontinued 4 oz sizes of their sanitizers. If you need a smaller amount of sanitizer, the following alternatives are available:
