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Kahl NP21 & NP27 negative B&W home processing.


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#1 Benjamin Coppens

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Posted 29 April 2008 - 06:58 PM

Hello,

Does anyone have experience with processing ORWO negative 100asa & 400asa at home?
Can I use Kodak D76 or Ilford ID11 to replace D96 wich I can't buy in Europe?
What about the fixing bath?

Thanks!

Benjamin.
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#2 Richard Tuohy

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Posted 30 April 2008 - 12:01 AM

Hello,

Does anyone have experience with processing ORWO negative 100asa & 400asa at home?
Can I use Kodak D76 or Ilford ID11 to replace D96 wich I can't buy in Europe?
What about the fixing bath?

Thanks!

Benjamin.

Yes you can use those no problem. I use d76 myself.
Any black and white film fixer will do, just use the times specified for film by the fixer manufacturer. Remember fixer goes off so don't store it, use it.
good luck
Richard

Edited by Richard Tuohy, 30 April 2008 - 12:01 AM.

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#3 Benjamin Coppens

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Posted 30 April 2008 - 05:13 AM

Thank you Richard!
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#4 Charles MacDonald

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Posted 30 April 2008 - 07:15 PM

replace D96 wich I can't buy in Europe?

I don't belive that D-96 and D-96A are sold anywhere as pre-packaged chemicals. You can mix them from the formula on the Kodak web site.
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#5 Mark Dunn

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Posted 01 May 2008 - 03:51 AM

Fixer doesn't oxidise like dev so it lasts much longer. I've kept fixer for 5 years. Basically, you can use it until it stops smelling acidic.
But do bear in mind that 50' of Super-8 has as much emulsion area as two and a half 36-exposure 35mm. films, and 100' of 16mm. is equivalent to almost 10. So you do burn a lot of chemicals- I think it's a one-shot deal as far as dev is concerned.
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#6 Charles MacDonald

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Posted 02 May 2008 - 07:49 PM

Fixer doesn't oxidise like dev so it lasts much longer. I've kept fixer for 5 years. Basically, you can use it until it stops smelling acidic.

The two common tests for fixer at home are

1) dip a sample of unprocessed film in fresh fixer, record the time it takes to become clear. After you use the fixer, repeat the test witha sample of the same film. When the time to clear has doubled, the fixer is full of silver and should be repleced or regenerated.

2) Look for a chemical called "Edwal Hypo Check" follow the directions but a drop of the stuff in used fixer will turn cloudy if the fixer is over used.

Labs will have more complecated checks, but they also use replenishment and so are chasing a moving target
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#7 Richardson Leao

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Posted 12 May 2008 - 04:52 AM

i've developed orwo with d19 and d76 developer with awesome results, I also sent the film to a lab that only did double-x continuously and the orwo behaved like the kodak during the development.

Another thing that's good to know about orwo films:

They can also be developed as reversal.


The two common tests for fixer at home are

1) dip a sample of unprocessed film in fresh fixer, record the time it takes to become clear. After you use the fixer, repeat the test witha sample of the same film. When the time to clear has doubled, the fixer is full of silver and should be repleced or regenerated.

2) Look for a chemical called "Edwal Hypo Check" follow the directions but a drop of the stuff in used fixer will turn cloudy if the fixer is over used.

Labs will have more complecated checks, but they also use replenishment and so are chasing a moving target


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rebotnix Technologies

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Technodolly

The Slider

CineLab

CineTape

FJS International, LLC

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Glidecam

Abel Cine

Opal

Media Blackout - Custom Cables and AKS

Tai Audio

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Wooden Camera