• Welcome to Photrio!
    Registration is fast and free. Join today to unlock search, see fewer ads, and access all forum features.
    Click here to sign up

Kodak C41 Kit stock to working calculator

half stop lighter er.jpg

A
half stop lighter er.jpg

  • jhw
  • Jan 12, 2026
  • 3
  • 1
  • 28
sentinels of the door

A
sentinels of the door

  • 4
  • 0
  • 58

Recent Classifieds

Forum statistics

Threads
201,703
Messages
2,828,797
Members
100,896
Latest member
Cosmin
Recent bookmarks
0

Kilgallb

Subscriber
Allowing Ads
Joined
Oct 14, 2005
Messages
833
Location
Calgary AB C
Format
4x5 Format
I have found I can take the Kodak 2.5l C41 kit and mix lower quantities of stock solution. I also find I can make calculation errors depending on whether I want 600ml or 900ml of stock solution so I created a chart and spreadsheet ot do it for me.

I do one shot in a Jobo processor with 2509 reels for 4x5. I settled on 300ml per cycle. Usually I mix 600ml stock and do two cycles as that fits nicely in my Jobo 600ml containers.

Here is the chart. I am also including the spreadsheet so you can quickly determine other amounts. change the extension to .xlxs to make it work.

Make sure you seal or tighten the concentrate bottles tightly. I have had no issues keeping the concentrate good for 6 months.

1768258247378.png
 

Attachments

  • C41 stock to working calculator - Copy.txt
    64.1 KB · Views: 1
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