I contend that you could put a teaspoon full of sand in your developing tank when you pour in the developer and it would make no difference. I also contend that Eastman Kodak Co quite possibly has historically the highest quality control of any company since the Industrial Revolution began. Ilford can't be far behind. I still say the developer would have worked fine. Hell, even Kodak D-76, Dektol, Fixer had black specks at the bottom of a mix. I never once had it show up anywhere in the finished work.Be glad these few companies even make this stuff any more. If you bang them over the head because it isn't perfect, they'll quit making it. Some things are just not worth the guff the customers give you.