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I was wondering how long would a 5G batch of starsan be "good" for? I follow the directions on the bottle, that I think it was 1oz to 5 G of water, in a 5G pail. but I was wondering how long that would stay effective, in a sealed pail?
I was just curious what everyone elses practices are?
thanks,
I test mine occasionally; as long as pH is <=3 it's still "good". I really only change it if it gets cloudy, or I screw up and get bits of grain/hops in it, but I probably don't technically have to do that. Keep in mind that with harder water, cloudiness is not a good indicator. But pH is really supposed to be the real determinant of effectiveness with StarSan. See, for instance, THIS post.