I have some blix that I mixed up six months ago. I know that it does deteriorate with time. However,
how do I know for sure whether it is still useful or a toss-up? I've been thinking of running a piece of RA-4 paper
through the blix (without developer) and then after a wash dunking it into the sulfide toner to see if there is retained silver.
Good idea? Bad idea? Anything better?