I don't know what they used as a benchmark, all they say is "Our testers are calibrated specifically for colloidal silver".

Go to: http://www.utopiasilver.com/accessories.htm and scroll down to the TDS1 tester for more info.

Jim


Ode Coyote wrote:
It would be interesting to know what was used as a benchmark. Apparently, some benches are of different heights and some look more like counters. I would trust a benchmark based on electrical conductivity of a known [solid?] substance rather than some dubious liquid solution. Typically a PPM meter will read half that of a microsiemens meter such as the PWT.

Ode

At 06:21 AM 6/7/2003 -0500, you wrote:

My TDS -1 reads from 0 to 999 not 0 to 2000 and it is calibrated to measure homemade CS.

Jim

The TDS-1 from Hanna Instruments is a good bit cheaper, but it reads
from 0 to 2000 ppm. You'll be using it at the *very* bottom of its
range, which means the accuracy will not be tremendous. Sorta like
measuring grains of sand with a yardstick. Do you see what I mean?





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