I dug out my old Hanna silver ion meter. It measures ionic silver, so
as such was not much more valuable than doing a conductivity test.
However I now realize all I needed to do is digest the colloidal silver
to be able to measure total silver content. I was wondering what is
recommended for doing this. There are a number of choices, nitric and
sulfuric acid and ammonia are several that can do this, but they are
pretty nasty. The Hach procedure involved both sulfuric and nitric
acid, boiling dry, refluxing, then neutralizing. It required a fume
hood and about an hour to complete. It seems that there should be a
simpler, safer and quicker method for colloid, like using citric or
acetic acid, then neutralizing with baking soda or something.
Thanks,
Marshall
On 4/19/2020 9:01 AM, Ode Coyote wrote:
http://www.colloidalsciencelab.com/
On Sat, Apr 18, 2020 at 8:37 PM Marshall <[email protected]
<mailto:[email protected]>> wrote:
What laboratory is recommended for testing colloidal silver. I
need an
exact measurement of the total silver, but a percentage of colloid vs
ionic would also be nice.
Thanks,
Marshall
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