Are you hesitating between Dioxypure Colloidal Silver in 20 ppm and 40 ppm? It’s a question we are often asked, and the answer is less simple than it seems. Many ideas circulate about ppm, particle size, or assimilation, without always being based on solid foundations.
Dioxypure Colloidal Silver, a simple formulation
Dioxypure Colloidal Silver is an aqueous dispersion of metallic silver particles, available in 20 ppm and 40 ppm. Its composition is intentionally minimal: silver and osmosed water, with no additives, no preservatives, and no stabilizers.
The water used is purified by reverse osmosis and has very low conductivity prior to production. The product is then manufactured and packaged in our laboratory in France, allowing for rigorous control of the production process. It is packaged in an amber glass bottle with an airtight cap and tamper-evident ring, to limit exposure to light and UV rays.
What does "ppm" really mean?
The acronym ppm stands for "parts per million". For a mass concentration of silver in water, 20 ppm corresponds approximately to 20 mg of silver per liter, and 40 ppm to 40 mg per liter. A 40 ppm solution is therefore twice as concentrated in silver as a 20 ppm solution.
This is the only fact established by the ppm figure: a total quantity of silver per volume. For everything else (particle size, the form in which the silver is present), one must be more cautious.
Common misconceptions
Common misconception #1: does a higher ppm mean larger particles?
Common misconception #1: does a higher ppm mean larger particles?
No, not necessarily. There is a common misconception that a 20 ppm solution would automatically have smaller particles than a 40 ppm solution.
In reality, ppm concentration and particle size are two different characteristics. ppm indicates the total amount of silver present in a given volume, but does not, by itself, indicate the particle size. This depends on the manufacturing process and requires specific characterization methods.
40 ppm therefore means more silver per liter, and not automatically larger particles.
Common misconception no. 2: Is 20 ppm necessarily "more bioavailable"?
Common misconception no. 2: Is 20 ppm necessarily "more bioavailable"?
It is sometimes said that 20 ppm colloidal silver is necessarily "more assimilable" than 40 ppm because its particles are supposedly smaller. This conclusion cannot be drawn based on the ppm concentration alone.
Since ppm does not indicate particle size, a concentration of 20 ppm does not allow one to conclude that the particles are smaller than those in a 40 ppm solution.
Key takeaway: 20 ppm / 40 ppm refer to a silver concentration. Particle size is a distinct characteristic of the dispersion.
Can you measure ppm at home?
No, the precise concentration of silver cannot be determined at home with a standard device. This is a frequent source of confusion with TDS meters and conductivity meters: these devices measure the electrical conductivity of the solution. Even when they display a value in "ppm", this value does not constitute a specific analysis of the amount of silver present.
It is therefore not possible to dip a TDS meter into a solution and use the resulting value to confirm or refute a stated concentration of 20 or 40 ppm.
The precise determination of silver content requires instrumental analysis performed in a laboratory, using methods such as ICP-OES or ICP-MS.
The Tyndall effect: an observation, not a measurement
Even though it is not possible to precisely measure ppm at home, it is possible to observe a physical phenomenon characteristic of colloidal dispersions: the Tyndall effect.
How does it work? When a light beam passes through a dispersion containing very small particles, part of the light is scattered by these particles, which makes the beam's path visible through the solution.
How to observe it? Place the bottle in a dark room, then shine a concentrated light beam laterally through the solution. The path of the beam may then become visible in the liquid.
What the Tyndall effect cannot do: it is a qualitative observation of light scattering, not a measurement. It does not make it possible to determine if a solution contains 20 ppm, 40 ppm, or any other concentration, nor to precisely compare two solutions based on the visual intensity of the beam. It also does not, on its own, allow for the chemical identification of the observed particles as silver.
20 ppm or 40 ppm: how to choose in practice?
Since ppm provides no information on particle size or "assimilation," the choice between 20 and 40 ppm is based primarily on the amount of silver provided per dose, and therefore on your usage habits:
- 20 ppm: a standard concentration, suitable for regular use.
- 40 ppm: a concentration twice as high, for a greater silver intake in the same volume.
Both formats share the same formulation (silver and purified water only), the same amber glass bottle, and the same French manufacturing.
Colloidal Silver - 20 ppm & 40 ppm
FAQ - Colloidal Silver 20 ppm / 40 ppm
What is the difference between 20 ppm and 40 ppm?
What is the difference between 20 ppm and 40 ppm?
Concentration. A 40 ppm solution contains twice as much silver per liter as a 20 ppm solution.
Does 40 ppm necessarily contain larger particles?
Does 40 ppm necessarily contain larger particles?
No. Ppm indicates concentration, not particle size.
Is 20 ppm necessarily more easily absorbed?
Is 20 ppm necessarily more easily absorbed?
No, this conclusion cannot be drawn from the ppm count alone. Concentration and particle size are two different parameters.
Can I measure ppm with a TDS meter?
Can I measure ppm with a TDS meter?
No. A TDS meter or a conductivity meter does not perform a specific analysis of silver. The precise concentration must be determined by an analytical laboratory method.
What is the purpose of the Tyndall effect, then?
What is the purpose of the Tyndall effect, then?
It allows for the observation of light scattering by particles present in a dispersion, but it neither allows for measuring ppm nor for chemically identifying these particles as silver.
Why an amber glass bottle?
Why an amber glass bottle?
It helps limit the solution's exposure to light and UV rays.
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