Chip, The ONLY thing that will measure PPM accurately at a reasonable cost is a spectrophotometer. Hanna makes one for $150.00 a single frequency model which would work excellently for silver. The chemicals will cost another $105.00 plus another $20.00 for some glassware. If you go that route I can supply you with a NBS certified sample to set up you spect.
For gold you will have to use Kinball labs as it must be done with an AA device. "Ole Bob" -- The silver-list is a moderated forum for discussion of colloidal silver. To join or quit silver-list or silver-digest send an e-mail message to: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
