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Dehumidifying Film Storage - Chemical Interaction


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#1 Erdwolf_TVL

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Posted 25 February 2006 - 12:20 PM

Good afternoon

Will Calcium Chloride affect film? Kodachrome 40 to be precise.

I have bought a chemical dehumidifer (normall used to dehumidify rooms and cars) and would like to place this inside a sealed container, along with my supply of film. I will then be placing this unit in the freezer.

It would be a bummer if I am doing more harm than good, so please advise!

Kind Regards

Jako
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#2 John Pytlak RIP

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Posted 26 February 2006 - 12:52 PM

Good afternoon

Will Calcium Chloride affect film? Kodachrome 40 to be precise.

I have bought a chemical dehumidifer (normall used to dehumidify rooms and cars) and would like to place this inside a sealed container, along with my supply of film. I will then be placing this unit in the freezer.

It would be a bummer if I am doing more harm than good, so please advise!

Kind Regards

Jako


I would suggest a more inert dessicant like silica gel or Molecular Sieves. Most chemical salts are likely to have an effect on film.
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#3 Erdwolf_TVL

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Posted 26 February 2006 - 01:37 PM

I would suggest a more inert dessicant like silica gel or Molecular Sieves. Most chemical salts are likely to have an effect on film.


Thanks for that... I'll try to get my hands in some silica gel instead.
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