Marlene, I use a $1000 + Ion Selective Electrode. This measures the activity of silver ions only (will not measure silver compounds or other ions) and is very accurate over a wide range of concentrations.
Regards Ivan ----- Original Message ----- From: <[email protected]> To: <[email protected]> Sent: Thursday, 17 August 2000 02:17 Subject: Re: CS>shelf life of CS? > In a message dated 8/16/00 2:44:48 AM Central Daylight Time, [email protected] > writes: > > << I have 20L of light yellow 20ppm CS 2 yrs old, which tests the same now > as the day it was made. >> > > > How do you test for ppm? > > Marlene > <")))>< -- 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]>
