>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?
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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