In the areas I am knowledgeable, I have no problem going against some manufacturer recommendations because I know enough about it to do so safely and achieve the purpose I want (and am willing to suffer the consequences).
I'm trying to get there in this area, though chemistry is one of my weak suits in general, let alone how it applies to absolutely anything in the real world.
(In my last post I said "unused" concentrate, I meant "unopened." Sorry, I am usually more precise than this when communicating via writing. In person, not so much .)