Star-San question

Can I keep this stuff diluted in a container? Or do I need to reconstitute it each time I want to use it? I wanted to have a spray bottle full of it, and a gallon milk jug filled with it for keeping stuff clean in my fermentation cooler.

what did you say!? yes, mix and store. use distilled water for max shelf life.

I haven't used Starsan but I believe yes you can, I use Idophor and keep a keg full of it. I often splash a couple more drops in the keg before I use it.

Your star san is good as long as the solution remains clear. If it turns cloudy throw it out. Mine stays this way for 2-3 months with my tap water. Try some with yours. If it turns cloudy quickly go with the distilled water brewingkitty recommended.

I would NOT wipe down/clean things in my fermentation chamber, keezer or whatever. When star san breaks down it becomes "food" for bacteria/yeast/mold. I found I would get a black mold growing on the inside of my ferm chamber and keezer so switched back to an appropriately dilute bleach solution.

GT

You will find some great tips for using starsan here...https://www.homebrewtalk.com/f39/sanitizer-question-54932/