I didn't see this, so am reporting second hand, but want to know if anyone has clue as to what is going on.
I had stored Star San in my emptied/cleaned keg under a little co2 pressure to ensure seal (although I may have not remembered to use CO2, so it could have been air. It sounds like a sound business practice from reading this forum. When my brother opened the keg expecting to dump and fill, the keg smelled sour and the star san solution inside was skim milk white.
Of course and thankfully, he stopped, rinsed thoroughly with hot water and re-sanitized. To my knowledge, the star san was mixed at an appropriate solution with clean (probably hot at the time) water from the tap.
Does anyone know what conspired here? Only things I can think of are reaction to something in Denver's tap water or a reaction with CO2 or some sort of oxidation. Does Star San go really bad like this? Is there anything else I could unknowingly have done to make this happen?
Does long term exposure to star san (bad or good) do any damage to non stainless parts (o-rings, connectors, etc.)?