Extending Life Of C41 Chems

Mid Day Matinée

A
Mid Day Matinée

  • 0
  • 0
  • 13
Cumberland Falls-7

A
Cumberland Falls-7

  • 1
  • 0
  • 77
Winter

A
Winter

  • 2
  • 0
  • 181
Pig Iron elevations.jpg

A
Pig Iron elevations.jpg

  • 1
  • 0
  • 247
Cumberland Falls-6

A
Cumberland Falls-6

  • 0
  • 0
  • 191

Recent Classifieds

Forum statistics

Threads
181,940
Messages
2,517,800
Members
95,456
Latest member
jrhii
Recent bookmarks
0

wjlapier

Subscriber
Joined
Aug 19, 2006
Messages
756
Location
USA
Shooter
Multi Format
How do YOU do it? Wash between Dev and Blix--would this matter? Most I've developed was 14 rolls combined 120 and 35mm. My last rolls were XP2 so I wasn't too concerned about a color cast or anything odd color-wise. But it got me to thinking some of you might have a method to extending the life of your c41 chems. I remember reading a while back where a guy was still getting good images from his negs at around the 24th roll. I use the cheap stuff from Freestyle and for the most part I'm happy with it. But when I start shooting some of my 220 film I'm wondering how far should I go before mixing the next batch.

I know this subject has been discussed many times and I appreciate the insight into your developing method to save pennies.

Thanks!
 

Punker

Member
Joined
Mar 4, 2015
Messages
153
Location
Los Angeles,
Shooter
Multi Format
I simply add more time to the Developer. I've never had to add time for the Blix but if I'm really stretching a kit past 20 rolls I'll add 30 seconds or a minute. The last time I pushed a kit went like this. Units are in minutes:seconds.
  • Rolls 1-12: 3:30
  • Rolls 13-15: 4:00
  • Rolls 16-19: 4:45
  • Rolls 20+: 5:45+
If the kit has been sitting for an extended amount of time without use, say a month, I'll also add time for that. So it varies.
 

Joel_L

Subscriber
Joined
Mar 12, 2011
Messages
431
Location
Colorado
Shooter
Multi Format
I have always mixed just what I need for one shot use. I purge the concentrates with Argon ( there are other choices, I use Argon because I have a spare small tank ). My chems last over a year. One shot does not give max roll yield, but I have good luck with long term storage. For me, this is more important because I just don't shoot as much as I used to but do still enjoy it when I do. At one time I was mixing less chem per volume for one shot trying to stretch my chems and actually had it working with great results. I took the approach of mixing the chemicals to meet the required chemical volume to do say 1 roll of 35mm, then mixed that with water to get to the volume my tank needed. On top of that was a time adjustment similar to using partially depleted chemistry. I've used that method with C41 and E6 with success.
 
OP
OP

wjlapier

Subscriber
Joined
Aug 19, 2006
Messages
756
Location
USA
Shooter
Multi Format
I simply add more time to the Developer. I've never had to add time for the Blix but if I'm really stretching a kit past 20 rolls I'll add 30 seconds or a minute. The last time I pushed a kit went like this. Units are in minutes:seconds.
  • Rolls 1-12: 3:30
  • Rolls 13-15: 4:00
  • Rolls 16-19: 4:45
  • Rolls 20+: 5:45+
If the kit has been sitting for an extended amount of time without use, say a month, I'll also add time for that. So it varies.

My 13-15th roll ( not sure which it is--lost count ) I used the extended time. So far scans look good. Thanks for the idea.
 

Rudeofus

Subscriber
Joined
Aug 13, 2009
Messages
4,623
Location
EU
Shooter
Medium Format
The absolutely cheapest way to process C-41 would go as follows:
  1. Dilute CD as described here by David Lyga. Also follow his instructions for stop bath.
  2. Convert your BLIX into a bleach as described in my article.
  3. Get a cheap neutral rapid fixer or mix one yourself, formulas are here for decent fixer and here for great fixer (do your self a favor and ignore the flame war following the original posting).
 

Sirius Glass

Subscriber
Joined
Jan 18, 2007
Messages
43,837
Location
Southern California
Shooter
Multi Format
I collect enough film to process. Then I mix the chemicals and process all that I have, 12 to 18 rolls, in two or three days and dump the chemicals.
 
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links.
To read our full affiliate disclosure statement please click Here.

PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Ilford ADOX Freestyle Photographic Stearman Press Weldon Color Lab Blue Moon Camera & Machine
Top Bottom