Removing fungus and crack like threads from negatives

Richard1985

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Hi everyone,

There have been many threads posted about the removal of fungus from film with varying degrees of success. One recommended approach is water with Kodak Photo Flo. Another recommendation has been to use Flexicolor Stabiliser IIII but I cannot seem to find this anywhere.

Has anyone tried water with Kodak Photo Flo and were you successful in removing fungus and crack like threads from film? If so, what ratio of Kodak Photo Flo to demineralised water did you use?

As I am new to this approach, specific details or protocols would be appreciated.

Thank you.

Richard
 

koraks

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Photoflo is a wetting agent; it won't remove fungus magically. Fungus can be removed through thorough washing, but it works best when combined with (cautious!) mechanical removal - think q-tips. Some form of alcohol may also be used in combination with mechanical removal, and a final rinse with a fungicide/antifungal (hence the stabilizer, or a very weak solution of formalin) will protect against further deterioration.
 
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Richard1985

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Hi koraks,

How would you wash your negatives? Perhaps leave the negatives in cold tap water for 10 minutes and then transfer them to a bowl with distilled water for a few minutes before transferring them to a bowl with Photoflo mixed with distilled water?

Can I use Photo Flo on color film or is it just for B&W film?

Do you think Tetenal Mirasol 2000 would be a good choice for the final rinse?

Kind Regards,

Richard
 
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Sirius Glass

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PhotoFlo is only for black & white negative. Color uses stabilizer.
 

koraks

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Letting the film sit still will not likely remove fungus. Go at it carefully with a q-tip or something like it. That'd be my approach.

Can I use Photo Flo on color film or is it just for B&W film?
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Yes you can, but especially for older negatives, it doesn't offer optimal protection. Older C41 films required a formalin-containing final rinse. The dyes are apparently less stable if there's no formalin. The formalin also helps with the fungus of course.

Do you think Tetenal Mirasol 2000 would be a good choice for the final rinse?
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Same story as Photoflo. Mirasol is an antistatic agent (and not unique in this sense), but doesn't offer much in the way of protection against fungus. Just like Photoflo, Adoflo, etc.etc.
 

foc

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I think the advice you have received about removing the fungus with a q-tip is a very good idea.
If you can't get stabilizer then you could try Fuji Conditioner tablets FSC100. They are not expensive and one tablet can be mixed with 5LT of water (use filtered de-ionized water)
 
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Richard1985

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OK this is what I'm planning to do:

I'm going to use Kodak Pro-Stabiliser/Final Rinse for C41 & E6 for B&W film.

Rinse the negative under cold tap water for about 10 minutes, possibly use q-tips as well. Then transfer the negative to a bowl of distilled or de-ionized water for a few minutes, then lastly to a bowl of de-ionized water mixed with Kodak Pro-Stabiliser/Final Rinse for C41 & E6.

Where would be a good place to dry the negatives? How about a shower cubicle?

Many thanks.
 

koraks

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Shower cubicle is fine. Anywhere without too much dust and draft will do.
I think the qtips are really going to be a necessity but see how it goes.
 

Wallendo

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I had fungus problems with a roll of Kodachrome that had been poorly stored for a few decades. I used Q-tips and PEC-12 (Back when B&H would ship this), I basically had to wipe off the fungus which did leave some depigmented areas on my slides., but at least has prevented further damage. If possible copy or scan your images prior to cleaning (that is what I did) in case your cleaning makes things worse.

I did find several references to removing fungus by freezing the film, but never found any description of the actual technic.
 

Doremus Scudder

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Remember to keep your processing solutions within a degree or so of each other. You can cause damage to the emulsion (reticulation/cracking) if you don't. Cold tap water, e.g., under 65°F, is likely not a good idea, since the cooler temperature may slow down the cleaning process. Normal b&w processing temp is 20°C/68°F. Color materials are usually processed at higher temperatures, but for what you're trying, 20°C or thereabouts seems good to me (not so much temperature drift).

Doremus
 
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Richard1985

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If I use a square hanging garment bag, can I dry the film in a bedroom cupboard instead? Has anyone tried this?
 

koraks

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The bag won't allow the moisture to dissipate, so drying will take longer and may not be complete. I'd also be wary of lint in the bag if it's been used for storing clothes.
 

MattKing

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Moving air is your (drying) friend.
 
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Richard1985

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I poured some cold water into a cup and left it for a few hours. I placed a thermometer in the cup and the temperature read 20°C, which was the same reading as soon as the water was poured from the cold tap. For some reason I don't believe this, the water seems colder than 20°C. I also placed the thermometer in warm water to make sure it is working correctly - it is.

What's a good way of ensuring that the water stays at around 20°C if I am working at room temperature? Could I boil the water and then leave it to cool to obtain a 'more accurate' 20°C reading?

Or am I making a mountain out of a molehill?
 

Doremus Scudder

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More important is not to temperature shock the film by moving it from a bath of one temperature to one that is several degrees different. As long as you are within a degree or two of a reasonable processing temperature, you should be just fine.

Doremus
 
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Richard1985

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I hope everyone had a nice Christmas.

Quick update. Can I use de-ionized water with the Kodak Stabilizer instead of distilled or deminerialized water?

Which type of water is best for use with Kodak Stabilizer out of these three?
 

koraks

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Richard1985 said:
Can I use de-ionized water with the Kodak Stabilizer instead of distilled or deminerialized water?
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Yes.

Richard1985 said:
Which type of water is best for use with Kodak Stabilizer out of these three?
Click to expand...
Distilled is best, but don't sweat it; all three will work just fine. Even though distilled is best, it's way overkill.
 
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