General Discussion :  Wet Plate Collodion Photography Forum The fastest message board... ever.       
Wet Plate Collodion Photography Forum 
TINCTURE OF IODINE & BETADINE QUESTION
Posted by: deltafour ()
Date: January 11, 2013 05:44PM

Can you use Betadine instead Tincture of Iodine when mixing collodion?

Thanks

Carl

Options: ReplyQuote
Re: TINCTURE OF IODINE & BETADINE QUESTION
Posted by: John Hurlock ()
Date: January 12, 2013 02:29PM

I'm not sure why you would want to use Betadine.

It only slowly releases Iodine and is probably more expensive.


[www.fao.org]

The polyvinylpyrrolidone it contains is a positively charged polymer that dissolves in water or alcohol but not in ether.
Therefore it may gel up your collodion.

It may even react with the Iodine released during the aging process thus inhibiting the collodion ripening process.

As a positively charged molecule it can form salts with any negatively charged molecules such as Iodides or Bromides which may precipitate from your collodion.

Options: ReplyQuote
Re: TINCTURE OF IODINE & BETADINE QUESTION
Posted by: deltafour ()
Date: January 12, 2013 07:46PM

Thanks for the information.

I can get a "ton" of it for nothing.
Since it has iodine in it I was curious if you could use it

Carl

Options: ReplyQuote
Re: TINCTURE OF IODINE & BETADINE QUESTION
Posted by: cmorganf64 ()
Date: January 15, 2013 04:51PM

Tincture is cheap. Look in the first aid section at your local drug store. Couple $ at the most.

Chris

C. Christopher Morgan
~Wet-Plate Collodion Artist~
North Carolina

wetplates.blogspot.com

Options: ReplyQuote


Sorry, only registered users may post in this forum.
This forum powered by Phorum.