Quality characteristics of colloidal silver

Even without tools, colloidal silver can be judged quite well in terms of its quality. However, there are some amateurish statements circulating on the Internet in this regard that contradict each other. The sources of such statements are often questionable, but are quoted again and again. In the following, we would like to go into this in a little more detail.

Colloidal silver: what are the misstatements?

You will repeatedly encounter some of the following misstatements regarding colloidal silver:

Colloidal silver must always be yellow or always colorless.
The color of colloidal silver indicates its concentration.
A TDS meter is used to measure the concentration.
The particles in yellow colloidal silver are too large.
It is possible to use tap and mineral water.
Chlorine is outgassed in the water.
The colloidal silver must be prepared with an electrode switch.
It must not have electrode sludge or ions.

The truth is: the user cannot find out the concentration of a finished dispersion!

Turbidity in a colloidal silver solution

Clarity has a completely different priority in colloidal silver compared to color. Regardless of its color, the silver water must always be clear and transparent. Cloudiness may occur during production, but the finished dispersion must be clear, otherwise it will contain an impurity. This can lead to the formation of silver salts. There are many causes of impurity. Sometimes invisible detergent residues lead to this, as do residues caused by rinsing with tap water, by impure distilled water with too high conductivity, by contaminated electrodes or by the use of mineral or tap water.

How is electrode sludge produced during electrolysis?

During the production of colloidal silver, electricity splits small amounts of water into oxygen and hydrogen. When a large proportion of the gases escape, oxygen components react on the surface of the electrode to form silver oxide, which becomes visible on the anode as a gray-black coating. On the cathode, on the other hand, elemental silver is deposited, which is often very conspicuous. It mixes with hydrogen bubbles, creating cloud-like formations. These processes can be stopped by wiping both electrodes. Surprisingly, electrode sludge forms particularly strongly in very pure water, so that this process can be regarded as normal.

The color of colloidal silver

Basically, the quality of a silver dispersion cannot be judged by its color. The colloidal silver can look yellowish, colorless and even brownish, all the color levels are completely normal. They usually refer to the concentration, because higher concentrations result in stronger colorations. They are caused by different light scattering, which in turn is caused by particles of different sizes, but not by impurities. The entire particle quantity is not affected, only a few particles of the dispersion are involved. Even slight differences in electrode hardening lead to these size differences, also changing current strengths produce different particle sizes during electrolysis.

Very pure water in turn dissolves carbon dioxide from the ambient air, which changes the pH value. This can also change the particle size, which leads to a new light scattering. Another cause is the conductivity of the distilled water used, which is not always the same. It is even possible that electromagnetic fields, radar, air pressure or light incidence play a role.

Certain shielding against an electromagnetic radiation has been proven to influence the discoloration of colloidal silver, which can occur even hours or days after the preparation of the dispersion. We use distilled water for the production, the conductivity of which is below 0.5 µS/cm. The rolled fine silver used has a minimum purity of 99.99 %. Our starting substances are characterized by the highest purity, which usually results in a colorless dispersion. Should yellowish or brownish colors occur due to higher concentrations, this would be normal.

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