You can see where I get my products on my website, link below.
In my experience, using HCl as an activator, the result is always pale yellow
for 5 drops or less. It gets darker for more than 5 drops, usually greater than 10,
and it starts becoming the "amber" brownish color people always talk about.
I've never used Citric Acid as an activator, but my suspicion is that you get
a darker amber color with that with fewer drops. (?)
I've used ClO2 Test Strips to check the PPM, and it is correct.
(I almost always check a new batch when I buy it)
My purchased CDS is a darker/brighter yellow color. (24,000 ppm; MMS1 drop-for-drop equivalent)
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Disclaimer:These statements have not been evaluated by the Food and Drug Administration. This substance, MMS (Master Mineral Solution), has not been FDA approved to diagnose, cure, mitigate, treat, or prevent any disease. Chlorine Dioxide is also called MMS throughout this website. Chlorine Dioxide Solution also known as MMS (Master Mineral Solution) is made of Sodium Chlorite 28% (22.4 Sodium Chlorite 5.6% Inert Salts and the remainder water) and an acid activator (usually 50% Citric Acid or 4% Hydrochloric Acid). License: Except where otherwise noted, content on this site is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.