Thanks again for everyone's comments, suggestions and feedback.
I changed email providers and they are tough on allowing forum message notices, even though I have "provided safe domain notes" in my junk folder. Just now seeing these comments....
From the board, I learned that MA is pretty impartial to external elements, unlike CL which is highly susceptible to heat, etc... I keep both CL and MA in our utility room since 2015 and never had an issue w product or surrounding materials.
My testing reagents are fine and new. Since the HDX bottles are white and you cannot see the product, maybe it's hard to ascertain if it's yellow or not when pouring. I think Lowes sells ChemTeK. I will give than brand a try.
Sometimes when I pour my MA, it steams. I am assuming stronger acid will steam more, but since it reacts to H2O, the more humid it is, the more it will steam too.
Thanks again to all.