Support our Sponsors, they keep FADU free:   AG Photographic   Keyphoto   The Imaging Warehouse   Process Supplies   RH Designs   RK Photo   Second-hand Darkroom Supplies   Silverprint Ltd

Notices

Go Back   Film and Darkroom User > Colour Work > Colour film

  ***   Click here for the FADU 2015/2014 Yearbooks   ***

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 2nd June 2017, 10:30 PM
kaifis kaifis is offline
Friend
 
Join Date: Oct 2016
Location: Paisley, UK
Posts: 9
Default Diluting C41 final rinse further down?

When I use final rinse for C-41 processing at the stated dilution, I sometimes get the sort of residue marks on 35mm film, which in b/w would make me dilute my wetting agent further down. (I do live in Scotland, where the tab water is very soft. So for b/w, I tend to get away with very little wetting agent in the final rinse before drying.)

In C-41 processing, this happens to me both with Kodak final rinse and, even more so, with the stabilizer which comes with the Digibase developing kits. It's only a problem with 35mm films, medium format dries fine.

Since the main purpose of the C-41 stabilizer is to protect the film from deterioration later on, I'm not so sure if thinning down stabilizer more than as per instruction is such a great idea?

Alternatively, are there C-41 stabilizers around which are less 'soapy' than others?

Any advise would be much appreciated!
Reply With Quote
  #2  
Old 3rd June 2017, 06:39 AM
John King John King is offline
Friend
 
Join Date: Nov 2012
Location: County Durham
Posts: 2,301
Default

I believe C41 stabilisers contain an amount of Formalin which is not in itself soapy but the problem you are having is with the very soft water. Almost anything will make bubbles!

The amount of froth created when you have a shower will show how soft it really is.

You could try diluting the stabilser with bottled water which will in all probability come from an area where the water is not so soft. Diluting the stabiliser further than the recommended will probably just make it less effective.
Reply With Quote
  #3  
Old 12th June 2017, 08:04 AM
JOReynolds JOReynolds is offline
Friend
 
Join Date: Nov 2012
Location: St Albans UK/Agde France
Posts: 904
Default diluting the final bath

Whereas 120 film is coated on both sides, the back of 35mm film is raw triacetate and emphasises drying marks. As I wrote in my post of 30 September 2015, in which I describe the method I was taught as an apprentice (search for 'froth'), I used to process other peoples' film for a living and I never had drying mark problems in soft or hard water. The enemies are impatience and froth (to be avoided at all costs). I did not mention in my post that I fitted a 20-minute delay timer to drying cabinets so that most of the surface liquid had drained off before the warm air came on.
To answer your question, C-41 final bath no longer contains formaldehyde but has additives to extend the life of the dye image. Dilution risks reducing this protection.
Reply With Quote
Reply

Tags
35mm, c-41, processing, residue, stabilizer
Support our Sponsors, they keep FADU free:   AG Photographic   Keyphoto   The Imaging Warehouse   Process Supplies   RH Designs   RK Photo   Second-hand Darkroom Supplies   Silverprint Ltd

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Diluting print developer GoodOldNorm Monochrome printing techniques 3 21st December 2016 11:23 PM
Final Q - Who would like to sell their prints? Today. MarcAeonDELETED Business Matters 62 24th November 2013 05:13 AM
Rinse water temperature control Paul M Darkroom 13 24th November 2011 09:10 PM
FADU 2009 Final Submission Details Dave miller FADU 2009 Print Exhibition 7 7th August 2009 06:09 AM
Alcohol in final wash! CarlRadford Monochrome printing techniques 16 5th January 2009 05:01 PM


All times are GMT. The time now is 02:48 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.