[pure-silver] Re: Fixer Stain Removal
----- Original Message ----- From: "Ralph W. Lambrecht" <info@xxxxxxxxxxxxxxxx> 
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, November 09, 2009 10:56 AM
Subject: [pure-silver] Re: Fixer Stain Removal
I'm trying to clean the inside of plastic bottles, so, I can try TC-3, 
if I can get the chemicals listed.





Regards



Ralph W. Lambrecht

http://www.darkroomagic.com
If the bottles have crystalized hypo try ammonia or even just plain hot water. The old TC-1, a bichromate and sulfuric acid cleaner used to be the standard for laboratory glassware and trays. Like a lot of other useful solutions its not available anymore due to environmental considerations. However, bichromate is used in a number of alternative photographic processes so is obtainable and sulfuric acid is, I think, a staple at swimming pool supply stores. 

--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx 
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