thanks, Marshall. On Aug 31, 2010, at 9:59 AM, Marshall Dudley wrote:
> CO2 forms carbonic acid and will lower the pH. Silver carbonate is a salt > and should have little or no effect other than buffering (and buffering will > always tend to move the pH from any present acids or bases toward the neutral > pH of 7). > > Marshall > > Kathryn Clayton wrote: >> On the subject of pH- how does the silver carbonate affect the pH? does it >> raise it or lower it? >> >> On Aug 31, 2010, at 9:17 AM, Marshall Dudley wrote: >> >> >>> David AuBuchon wrote: >>> >>>> I'm also curious about the number 26PPM (silver oxide and silverhydroxide). >>>> >>>> Frank Key says 13.3 is the saturation point of ions: >>>> "What is the highest concentration of ionic silver that pure water will >>>> keep in solution? If no other contamination anions >>>> <http://www.silver-colloids.com/Papers/definitions.html#anion> are >>>> present, the maximum concentration >>>> <http://www.silver-colloids.com/Papers/definitions.html#concentration> of >>>> silver ions >>>> <http://www.silver-colloids.com/Papers/definitions.html#silver.ion> that >>>> pure water can hold at room temperature in an unsaturated solution >>>> <http://www.silver-colloids.com/Papers/definitions.html#saturated> is 13.3 >>>> ppm. In practice, there is substantial dissolved CO_*2* in the water >>>> which provides additional anions, so a higher concentration of silver ions >>>> is possible without saturation. " >>>> >>> He apparently looked up the solubility of silver oxide. However since >>> silver oxide will convert into and from silver hydroxide, which has a >>> higher solubility, the effective solubility when both are taken into >>> account turns out to be approximately double that. With CO2 in the water >>> that allows for formation of silver carbonate, which does have a higher >>> solubility as well. Significant presence of CO2 can be dtected by taking >>> the pH though. >>> >>> Marshall >>> >>>> ~David A. (the "A" is to differentiate between several David's on the list >>>> =P) >>>> >>>> >>>> On Mon, Aug 30, 2010 at 8:35 PM, Alchemysa <da...@alchemysa.com.au >>>> <mailto:da...@alchemysa.com.au>> wrote: >>>> >>>> We know the maximum ppm of IONIC silver in pure water is about 26 >>>> ppm. And we know 'true' colloidal silvers (e.g. Mesosilver) have a >>>> PARTICULATE ppm up to 32 ppm. But whats the maximum TOTAL ppm that >>>> can be achieved with some level of stability in pure water? Would >>>> it be the sum of these two, or is it a case of 'one or the other'? >>>> I guess I'm raising the question of 'saturation points' and >>>> 'suspension points' (if there is such a thing), and how they >>>> interact. And I'm thinking of a batch thats made purely by >>>> electolysis. >>>> >>>> One problem in answering this question myself is that I rely on >>>> silver-colloids.com <http://silver-colloids.com>. for various >>>> details. But silver-colloids uses commercially purchased or >>>> privately submitted batches for testing, and these batches tend to >>>> be clear or pale yellow, and hence only about 15ppm TOTAL . No-one >>>> ever submits a really dirty batch for testing do they? >>>> >>>> David >>>> >>>> >> >> >> -- >> The Silver List is a moderated forum for discussing Colloidal Silver. >> Rules and Instructions: http://www.silverlist.org >> >> Unsubscribe: >> <mailto:silver-list-requ...@eskimo.com?subjectsubscribe> >> Archives: http://www.mail-archive.com/silver-list@eskimo.com/maillist.html >> >> Off-Topic discussions: <mailto:silver-off-topic-l...@eskimo.com> >> List Owner: Mike Devour <mailto:mdev...@eskimo.com> >> >> >> >> >> >> >> >
