Marshall,
I used mutualcornell to test the 50 PPM made by my "ultra" generators.
https://www.goldismoney2.com/threads/the-art-of-making-colloidal-silver-silver-ions-electrically-isolated-silver.61973/page-6
You can deduce the particulate versus ionic ratio by the results before and 
after the addition of nitric acid.
Best regards,
Arnold


Sent from Mail for Windows 10

From: Marshall
Sent: Saturday, April 18, 2020 5:37 PM
To: silver-list@eskimo.com
Subject: CS>Testing of Colloidal silver

What laboratory is recommended for testing colloidal silver.  I need an 
exact measurement of the total silver, but a percentage of colloid vs 
ionic would also be nice.

Thanks,

Marshall


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