Help, need developing time...

[cjm]

I have some Arista II 400 (rebranded Agfa Apx 400) that I would like to push to 800 in HC-110 Dilution B. Thus far I've only found times for processing at 400. The digitaltruth chart doesn't have a time for Arista II at 800.

Is there a standard increase in time for pushing 1 or 2 stops? 20%? 30%?

Thanks

 

[charjohncarter]

Arista II 400 is probably a rebadge. Find the other name for it and use that time. If none, then use 10%-20% increase and you will be close.

 

[cjm]

Arista II 400 is probably a rebadge. Find the other name for it and use that time. If none, then use 10%-20% increase and you will be close.

Thank you. I ended up adding a minute and the results were good as far as I can tell.