CS> How Much Silver Did I Drink?
Some time ago, Bruce Lee posted an interesting discussion on the
amount of silver in a glass of cs. The discussion was very technical
and probably only a few could understand it. Here is a simplified
version.
PPM's
~~~~~
We measure cs in ppm, or parts per million. One milligram of silver
in one litre of water equals one ppm.
Note: This really means one milligram per kilogram, since 1 litre of
water weighs 1 kilogram. We use volume because it's easier to
measure. And everyone knows a kilogram means a thousand grams, and a
gram means a thousand milligrams. So 1,000 times 1,000 = 1,000,000,
and there's our ppm - one part per million.
Microsiemens (uS)
~~~~~~~~~~~~~~~~~
We know that the conductance measured with a PWT, or Pure Water
Tester, is equal to the ionic content in ppm. The correlation factor
is the average of Ivan Anderson's measurements, Trem's data, and
Frank Key's product measurements on his web site. So 1uS = 1ppm.
Let's say you drink 300 ml of cs, and your Hanna or COM100 measures
15uS. We will solve the equation
Ag = uS * L
the amount of silver in milligrams is the conductance times litres.
Getting the Answer
~~~~~~~~~~~~~~~~~~
The quantity in litres is 300 ml / 1,000, or 0.3 litres.
The amount of silver is 15uS, or 15 milligrams per litre.
So we just multiply these two numbers to get the amount of silver:
Ag = uS * L (weight in milligrams equals ppm times number of litres)
= 15 * 0.3
Aha! Now we have a tiny stumbling block. You don't have a
calculator, or can't figure out how it works.
That's OK. Just go over to google and enter these numbers in the
search box: 15 * 0.3, and press Enter.
And google prints
15 * 0.3 = 4.5
And you have just calculated the number of milligrams of silver in
your glass: 4.5 milligrams!
Ounces of cs
~~~~~~~~~~~~
The next problem is if your glass is measured in ounces. Say you
drink 8 ounces. We need to figure out the volume of cs in millitres.
Once more, google comes to the rescue. We go there and enter the
following:
8 oz in ml
This means please, google, what is 8 ounces in millilitres?
And google prints
8 US fluid ounces = 236.588238 ml
Notice that google assumes you live in the US.
We need to convert this to litres by dividing by 1,000, then
multiply by the ppm. We can do this in steps, and I'll just show the
results courtesy of google:
236 / 1,000 = 0.236 litres
Recall the cs measures 15uS, so
0.236 * 15 = 3.54 milligrams
And now you know how to calculate the amount of silver in your cs!
Best Wishes,
Mike M
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