I'd be interested to see a MSDS that says that ultra-pure water is a hazard. I find a lot saying it's not. Pretty sure that what you heard about was either apoc

I'd be interested to see a MSDS that says that ultra-pure water is a hazard. I find a lot saying it's not. Pretty sure that what you heard about was either apocryphal or one of those "out of an abundance of caution" scenarios.