James wrote: > Bear in mind that most commercial labs using an AA spec. get spurious > values with CS.
What that really means is that the labs you sent samples to don't know how to do the measurement properly. A properly calibrated AA is considerly more accurate than a spectrophotometer and is considered to be a better technique for measuring trace metal concentration. An AA will measure total silver without first converting the particles to ionic form provided the particles are under about 5 microns, which colloidal silver particles are. The spectrophotometer will only measure ionic content. To measure the silver in the particles requires that the particles first be dissolved in acid or digested to convert the metallic silver into its ionic form. All in all, an AA is more accurate and a less time consuming procedure than a spectrophotometer for measuring metal concentration in colloids. frank key -- 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]>
