do a 'grey card' test with a few sheets if you can. Must be real friends with someone to get 2 boxes of 8x10 efke 100 . Wish my friends were that generous !
also, how are you developing? Trays, deep tanks(hangers), jobo(rotary)? Also, what dilution will you be using?
3/4 of the way down the page. ~time is 8min or so. I'm going to pick up a P-H.D. kit to try out, since so many people have recommended it to me for use with efke 100
I have some Efke 100, 4x5 and Pyrocat-HD havent tried it together yet(havent shot any Efke yet) I have run a roll of 120 Efke 100 in it, looks very good, prints very easy with #2.5(my normal for my enlarger)filter except on Varykon paper (really contrasty paper)I drop one full grade of contrast.
Continuos agitation (Jobo) 20C 2+2+100 13 minutes will get you close. 1+1+100 will give you to long process time and higher base stain.
Try it on a couple of sheets first.