To give your brewing equipment an added layer of protection from contaminants, try IO Star Sanitizer.

IO Star Sanitizer is a low foaming iodine based no-rinse sanitizer. To use, dilute 1 oz of IO Star in 5 gallons of water. Allow for 1-2 minutes of contact time. It won't corrode copper or steel but will slightly stain vinyl tubing and some plastic parts over time. This staining does not affect the functionality of the tubing in any way.