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

Notices

Go Back   Film and Darkroom User > Chemistry > Chemical formulae

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

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 13th February 2009, 07:30 PM
Rob Archer's Avatar
Rob Archer Rob Archer is offline
Friend
 
Join Date: Sep 2008
Location: Kings Lynn, Norfolk - flatlands and big skies.
Posts: 1,192
Default Stoeckler's 2-Bath Film Developer

Probably the simplest 2-bath developer to make and use. - incredibly cheap, too!

Bath A

Metol: 5 g

Sodium Sulphite: 100g

Water to 1 Litre

Bath B

Borax: 10g

Water to 1 Litre

Mix in the order given in about 3/4 the total volume of water at about 35-40DegC. Make sure all the Metol is fully dissolved before adding the Sodium Sulphite. Make up the total volume with cold water.

To use pour Part A into the tank and agitate continuously for 4 - 5 minutes. Drain the tank thoroughly and immediately (do not rinse or use stop bath)pour in Part B, but DO NOT AGITATE. After 4-5 mins in part B pour out, stop (or rinse) fix and wash as normal.

This works because the developing agent (Metol) is absorbed into the emulsion during the first bath, where little development takes place. Part B is an accellerator, which immediately works rapidly in the highlight areas, where because there is no agitation the developer is exhausted rapidly, preventing the highlights blocking up. The shadow areas continue to build slowly until all the absorbed developer is exhausted, giving a very printable negative with excelent highlight and shadow detail and well-separated mid-tones.

Temperature is not critical but this works best at 20degC .

A few other useful tips:
  • Don't try to develop several films together in large tank. The lack of agitation in part B will lead to streaking ('Bromide Drag').
  • Increasing development time or temperature will give denser negatives but will have little effect on contrast
  • Stoeckler's works extremely well with slow films. Faster films will need longer times in both baths - you may need to experiment a bit to find your ideal times.
Reply With Quote
  #2  
Old 14th February 2009, 06:56 AM
Rob Archer's Avatar
Rob Archer Rob Archer is offline
Friend
 
Join Date: Sep 2008
Location: Kings Lynn, Norfolk - flatlands and big skies.
Posts: 1,192
Default

I should have added another tip - start by halving the 'box speed' of the film. e.g. rate PanF+ @25. Sufficient exposure is essential.

Sorry

Rob
Reply With Quote
  #3  
Old 7th November 2009, 04:55 PM
CarlRadford's Avatar
CarlRadford CarlRadford is offline
Friend
 
Join Date: Oct 2008
Location: Just outside of Glasgow
Posts: 227
Default

Just souped a roll of hp5+ in Thorntons Two Bath just to play and to test a roll through a contax 645 I have on loan. I made the mistake of constant agitation in both baths as I misread something! However, I am pretty astounded by how good the negs look - first of our black labrador and then of a white/cream vase with some twig bits in - might even get the enlarger out from wraps and see how they print in beers
Reply With Quote
  #4  
Old 8th November 2009, 08:05 AM
SteveB SteveB is offline
Friend
 
Join Date: Aug 2009
Posts: 20
Default

Is there a developer that can be used for film and paper. eg hp5 and ilford rc paper. if not have you an equally cheap developer for paper. What about fixer?
Reply With Quote
  #5  
Old 8th November 2009, 11:03 AM
Keith Tapscott.'s Avatar
Keith Tapscott. Keith Tapscott. is offline
Friend
 
Join Date: Jun 2009
Posts: 1,008
Default

Quote:
Originally Posted by SteveB View Post
Is there a developer that can be used for film and paper?

What about fixer?
Try CHAMPION SUPROL for a universal developer which will be supplied with full instructions.
Ilford RAPID-FIXER
is suitable for films and papers.

This section of the forum is for photographic formulae, so you probably should have asked this question else where.
Reply With Quote
Reply
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
D-23 Film Developer Barry Chemical formulae 18 25th September 2012 01:10 AM
Two Bath Developer Dave miller Chemical formulae 1 5th June 2009 04:43 PM
What film / developer combinations are you guys using? Victor Krag Monochrome Film 21 26th April 2009 10:17 PM
Processing most film with a universal developer? kennethcooke Monochrome Film 9 24th February 2009 03:42 PM
Which Film Developer? Barry Chemical formulae 31 23rd November 2008 05:11 PM


All times are GMT. The time now is 07:02 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.