Here I am back for the fourth week with my Caffenol. I intended this week to be the last of my first brew. I was encouraged by the last weeks experience and became a bit too bold maybe and alas the issues added to the issues.
First for this last batch I chose to process a roll of Tri-x that I shot over the week end with friends and family. Tri-x is said to be not super Caffenol friendly and my first roll was not a massive success. How to calculate for both the estimates 7.3 minutes leading to over processing and the exhaustion of the Caffenol? I settled to try for a 6.3 minutes (including pouring in and pouring out time). To put odds on my side I also filtered the fixer that seemed to show some flocculation last week.
Alas again the gods of the dark room were not with me today, and after fiddling for a while (in the dark) I managed to load the film incorrectly in the spool of my Patterson tank. And the result is here : half of my roll is not processed. As I write it I think could have put it back in the Caffenol, but actually I just binned it. Well we learn by our mistakes, so I will have to iron out this process. All in all I may only have loaded 10 to 15 rolls in my life.
The film shows a bit of reticulation, but I think it may be the tap water used to rince the film, may have been to warm (tap let on hot after the washing up). Also it i snot as clean as my first negs so on top of it maybe the Caffenol need also to be filtered.
Anyway, I think the point is that my negative looks ok, so 6 minutes 30 seconds in 3 weeks old caffenol is OK for processing Tri-x and also maybe the caffenol can last 4 weeks?