This message appeared today in the sci.chem newsgroup. It is discussing that .9999 silver is not really .9999 pure:
In determining the purity of a metal one analyzes only certain impurities ... say for Silver they are Copper,Lead,Iron and Bismuth if they add up to less than 100 ppm ... then it is 99.99% pure ... other impurities are not counted ... a common one in zone refined (rather than electrolytic silver) is oxygen ... which can easily be well over 1000 ppm ... Marshall -- The Silver List is a moderated forum for discussing Colloidal Silver. Instructions for unsubscribing are posted at: http://silverlist.org To post, address your message to: [email protected] Silver List archive: http://escribe.com/health/thesilverlist/index.html Address Off-Topic messages to: [email protected] OT Archive: http://escribe.com/health/silverofftopiclist/index.html List maintainer: Mike Devour <[email protected]>
