Hi guys

I just wanted to know if anybody has any info for plus-x 125 iso.I read somewhere that fp4 is around 12 min @ 20c . I have all the stuff i need,I had to make my own sodium carb from baking soda.

What i would like to know is the time for fp4 a good starting place for the plus-x being iso 125. I got 60 rolls dated 2006, It works fine in rodinal but I want to try coffee.

Any info would be great. thanks al.b