Reid Harvey wrote: > Marshall, Mike D. and Everybody, > As to photo developer ideas, I'm starting to get excited about this, the > possibility of silver nitrate, saturation of water purifier, then using > some kind of developer. Thanks to you Marshall, and as you suggest I > think I'll try to open up to the chemistry. But one question is: if I > saturate with AgNO3, then dry, why do I need prior application of CS for > plating? Wouldn't the drying be enough, situating the AgNO3 salt in the > medium? Then I could put the developer through the dry purifier. >
The way the photo development process works, silver in silver salts, decomposes and deposits silver atoms onto any silver particles or atoms already present. The atoms or particles are necessary as seeds, or no development takes place. This is what you see on a photo, the light causes small amounts of the silver compound to spontaneously reduce to silver atoms. Then when developing, any silver compound in contact with the silver atoms/particles, reduces to silver atoms and binds to the particles making them grow. As the get larger the print gets darker until the desired density is reached. > > Mike, I do not know the maximum temperature for this plastic, except to > say that it is not designated for heat. Occasionally I put these into a > bread oven for drying, maybe getting about 80C. Or perhaps if used heat > resistant plastic we could then go upto about 500oC, at which > temperature the nitrates burn off. I'd have to check plastic specs. If you burn off the nitrates, leaving behind the silver atoms, then the development process should work fine. Marshall -- The silver-list is a moderated forum for discussion of colloidal silver. Instructions for unsubscribing may be found at: http://silverlist.org To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
