Originally Posted by Ian Grant
My own experiences with Pyrocat HD (sodium carbonate version used 1+5+94) suggest that developing times for varied films vary quite a lot. When I started using Pyrocat I used Sandy Kings graphs which he included in his article posted on www.unblinkingeye.com. I found my negatives to be quite under developed. I think I have finally got my times locked down to the following: -
HP5+ 320iso 17minutes
FP4+ 100iso 14 minutes
Adox CHS100 80iso 8 minutes (2+10+88)
Efke R25 18iso 10 minutes (2+10+88)
Kodak Verichrome Pan 100iso 9 minutes
I have some Fomapan 100 and ERA 125 in the freezer but have not tried it yet. Many of my subjects have an SBR of only 4 stops. I would be grateful to know what your standardised time it.
I have stopped using Prescysol EF simply on the grounds of economy. I used to use it at double strength for 10.5 minutes to get the necessary punch in my negatives. I found it lasted about 6 months once opened.