On March 23, 1998, I made some colloidal silver solution using exactly the
same procedure that I had previously used to make colloidal silver solution in
January, 1998.  I had samples of the Jan.98 solution tested for ppm at a local
laboratory.
The results showed 25 to 27 ppm.

On March 31, 1998, I used the TDS-1 to test my tap water and it showed 124
ppm.  I then used the TDS-1 to test the colloidal silver solution made on
March 23, 1998.  That test showed 27 ppm.

H. Davis


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