Thanks!
First, tricky surviving in a safety thinking country as Sweden. In regards of chemistry. No raw chemicals available for purchase anywhere and EU restrictions for importing such as well. So, adding KBr is a good thought but u´tely out of my hands.
But, isn´t it a poor credit if additions are essential to give good results? Should work straight out from the box. Right?
Second, I´ve tried 1:15, 1:20...1:40 dilutions at 18 degrees C, 25C, 30C, 35C and 40C. Same result. With or without OB.
My conclusion regarding use of OB in LD20 is, it makes the optimum window appear sooner but also given less decent copies.
But, how many copies do you get out of LD20 before replenishment? If you compare to other developers, will LD20 give the same amount?
I find Moersch, for instance, give a longer optimum window, more copies and much longer open time before developer quickly exhausts. Not only more bang for the bucks, it gives better bangs also.