Just last week I received a new supply of Phenidone and I mixed up a fresh batch of PC-TEA. My last batch of PC-TEA, mixed with my four years old supply of phenidone gave me a B+F of around .12 with FP-4+, with the new phenidone my freshly mixed PC-TEA gave a B+F of about .50 (!) and about 1 1/2 stops less film speed. Thinking I goofed somehow, I mixed another, smaller batch of PC-TEA. Same thing. From there I made simple PQ/carbonate developer, which normally would give me a B+F of around .16. I haven't measured the B+F yet but it is obviously way too high and the film speed too slow. I'm positive the HQ is good so that kind of narrows the problem down to the phenidone. As a reality check I mixed up a simple metol formula and this came out normal. Anybody have any ideas or should I just write this off as a bad batch of phenidone?