Inaccurate? Discontinued? Really?! I wonder if someone has told that to Taylor

I bought a 16 oz bottle of the reagent and a 125 g bottle of the DPD powder from amatoind.com. I keep them in the basement fridge and have not noticed any degradation. Every once in a while I test a known sample to make sure the reagents are still good. You can get refills from amazon as well, just be sure the vendor is Amato.

Knowledge is power. It's great that you found useful information here on the forum!