I have a very strange problem. Whenever starsan makes contact with either of my plate chillers (one a therminator), it gives off a horrible odour. Its almost as if it is reacting with the copper inside the chiller. When tap water or wort goes through the chiller, it doesnt seem to impart this odour.
On the rare occasion I have cleaned the chillers with caustic. Could this have destabilised something?
I'm worried non-biological (metallic) contaminants are getting into my beer. It isnt turning out great because the final beer PH consistently gets driven below 4 despite a proper mash and postboil ph (~5.5 at 25C). And there are no signs of infection.
On the rare occasion I have cleaned the chillers with caustic. Could this have destabilised something?
I'm worried non-biological (metallic) contaminants are getting into my beer. It isnt turning out great because the final beer PH consistently gets driven below 4 despite a proper mash and postboil ph (~5.5 at 25C). And there are no signs of infection.