Norton, Steve wrote:
>From what I can gather, to measure ppm with a spectrophotometer you
must measure a solution with a known ppm first. You then measure the
unknown solution and then using a formula you can calculate the ppm of
the unknown solution. If you have multiple known solutions of CS of
different ppms, you can plot a conversion chart that gives more accuracy
than the formula. Is that correct?
Does the colorimeter use the same methodology?
That Hach unit I have is calibrated, so you do not use a solution with a
known ppm. You put in a control, which is the same distilled water that
the CS was made from, and let it run the baseline, then put in the one
with CS in it, and it displays the ppm directly. However all the silver
must be digested first, using nitric acid.
Marshall
Thanks,
Steve N
-----Original Message-----
From: Ode Coyote [mailto:[email protected]]
Sent: Monday, December 15, 2008 4:28 AM
To: [email protected]
Subject: Re: CS>testimony of nutronix silver ceo
Find a lab that has a flame spectrophotometer and knows how to use
it.
The Hach Colorometer [like Ole Bob had] works pretty well
Titration processes normally used in water analysis are wildly
inaccurate at 10 PPM.
Ode
At 10:15 PM 12/14/2008 +0005, you wrote:
Hi Mike , What ppm did your samples come back at thanks Ted
Lordy, Ted, that was years ago and the process I used then bears no
resemblance to what we do today. I think they were in the mid 20's, but
the brew was made with heated water and was the color of ale! Nor do I
remember what process they used to do the test, though I think I knew
at the time.
The point of me mentioning it was that it's a way to get your product
tested locally. Environmental testing is available most places there
are industrial activities generating effluent, and the local labs that
do it can probably be found in the phone book if you look for them.
Tell them you've got a few to a few tens of ppm of silver in clean
water and wanted to know its concentration. Ask them what testing
processes they might have available for that, how much they cost, and
whether they'll detect both dissolved (ionic) silver and neutral,
insoluble, or particulate forms.
It's not something I'd do very often, and who knows what kind of prices
you'll find when you look -- I'm sure they'll vary widely depending on
the lab -- but if you want to "know" what you're getting it's an
option.
Be well,
Mike D.
[Mike Devour, Citizen, Patriot, Libertarian]
[[email protected] ]
[Speaking only for myself... ]
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