I ran some (properly mixed) pbw through a plate chiller and I let it sit inside for about two days. When the cleaner came out of the chiller it was blue. Also, the chiller was recently put in the oven for a good cleaning, but it was rinsed thoroughly after it cooled. any ideas?
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Smellin like a brewery lookin like a tramp ain't got a quarter got a postage stamp and a five o'clock shadow boxing all around the town talking with the old men sleeping on the ground.
The PBW liberated some of the copper brazing material, not enough to cause problems but enough to make the water blue with copper hydroxide. If you are concerned with residual copper hydroxide in chiller, soak inside with sodium bisulfite follwed by hot water flush.
PBW turned blue?
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