How to Make Colloidal Silver Generator


Prelude: Make Colloidal Silver at Home

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This is the new device which I use lately, and I’m satisfied with it in all respects. It is one realization of the Selbstbau-Projekt. I have changed it a little bit. The original device operated with a 5mA electrode current. In my opinion it’s a lot. I have modified the power generator, so now the electrode current is 1,0 mA. Furthermore, I have added a polarity changer, as it is a must.

Colloidal silver generator circuit and the device

Let’s see! It is working with a higher than usual voltage, but also more efficient. Since in an idle (unloaded) position the voltage can reach 60V on the silver electrodes, we should be particularly cautious. This exceeds extra-low voltage, so it may not be marketed, and small children should not be allowed to be anywhere near!

The designer chose an unusual way in order to increase the voltage. The TR1 transformer, operating in reverse mode, transforms up the output of an alternative voltage provider 12V AC adapter. We use only one half of the 2 x 12 and 2 x 110-volt transformer. There is one bidirectional transil diode (transient suppressor) both in the primary and secondary circuits, which are responsible for keeping the peak voltage at bay. Additional voltage limiting element is the post rectification ZD51 Zener diode. This is followed by a deliberately frivolous filtering with the help of the 1N4003 diode and 22mF condenser. Thus, a pulsating DC gets to the silver electrodes, which is likely to become beneficial for the device.

colloidal silver oscilloscope signal to the electrodes

The waveform measured on the silver electrodes at the beginning of colloidal silver production


The lower half of the schematic illustrates the polarity switch relay that has been actualized with the 555 timer. With the help of the applied components, it symmetrically switches polarity in about one minute.

colloidal silver generator printed circuit design
Here is the printed circuit design created by me, to see if anyone needs it. It has been created by the Sprint-Layout 5.0 design program .lay format.


Under 1,5 hours I create 3dl, 10 ppm dense (in my opinion) quality colloidal silver with it. This density is sufficient. The more is not better! The resulting solution is colorless, tasteless. It should be like that. Okay, a slight metallic taste can be felt – eventually there is silver in it. On the electrodes and on the surface of colloidal silver the precipitation is infinitesimally low. Measurement results:

colloidal silver generator Measurement results

For the evaluation we need to know the following:

  • I use 12 cm long; 1,63 mm diameter, 99,99% pure German silver wire electrodes, which have a subservient length of (that is immersed in distilled water) 80 mm.
  • distance between the electrodes is 25 mm

I heat the distilled water during the production of colloidal silver. 220V, 50W efficient halogen-like bulb is the radiator, the same as what they use to light cupboards with. As can be seen on the pictures, above the light bulb, approximately 8 mm away there is a 5 mm thick iron plate – this is the “chock”. This piece of iron is hot when it functions, but the distilled water in the glass is around 40 °C only. It reaches this operating temperature under 45-60 minutes, the time I wait to switch on the colloidal silver producing circuit after switching on the heating earlier. Heat transfer increases significantly – the liquid temperature can be increased to 50 degrees – if I slightly lubricate the bottom of the jar with silicone grease. The heating is a quality requirement as well, because in the meantime, it can solve the thermal mixing of the solution.


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Make Colloidal Silver at Home


When writing “how to make colloidal silver” into YouTube’s search box, we receive dozens of “top notch” tips on how to produce colloidal silver at home

How to not make colloidal silver at home
The whole process seems quite simple. 2 high-purity silver electrodes, distilled water, a pure bottle, 1 or 3 pieces of 9-volt batteries connected in series, two cables with alligator clips and half an hour time spent on it. Roughly speaking, this is what we can see in these videos. If only it could be this simple…

However, I’m not saying that we are not allowed to produce colloidal silver this way. Do it if we want to. Just do not drink it! For example, we can use it for spraying virus-infected plants, or perhaps to cure animals.

So, what’s the problem with the aforementioned methods? There are some.

One of the main quality characteristics of silver colloids is the size of silver particles in the solution. Also, the size of particles is determined by the amperage formed in the circuit. At the start of electrolysis, the amperage is very low, because distilled water is a bad electrical conductor. However, if silver particles get into the solution the distilled water becomes a better current-carrier, and it can reach the 1 mA limit rapidly – a border which shouldn’t be crossed. The higher the amperage, the bigger silver particles peel off from the electrode, the worse will be the quality of the end product.

However, without restriction, the intensity of power increases exponentially. Meanwhile our silver solution becomes inefficient to the same extent.

This proves that producing safe to use colloidal silver under thirty minutes cannot be carried out with methods described in these videos.

Solution: the power supply should be in power generator mode, which helps to maintain the amperage on an adjusted and constant level, in order to ensure homogeneous, small particle size. However, this regulated method makes the whole procedure longer. About 8 hours needed to reach the desired density of 10-15 ppm. Of course, this whole time-period also depends on the size of the electrodes’ surface, the voltage, how much solution is prepared, its temperature, etc.

Some of the videos describe the quality of materials properly, while others don’t.

Only distilled water purchased from pharmacies can be used, because any other water, cleansed by various devices, is inappropriate.

At least “four-nines” pure silver electrodes (99,99%). Of course, the “five-nines” is better, but they measure it in gold price already. Using any coin, or jewel by way of an electrode is prohibited. With an appropriate pair of electrodes you can produce approximately 200 liters of colloidal silver, which can be enough for more than 40 years.

It’s amazing how they ignore the sterilization process in the guides. (The danger of the formation of silver salts: silver nitrate, silver sulphate, and silver chloride) These videos do not indicate that the materials used during production, bottle, container, and funnel, have to be rinsed thoroughly with distilled water before starting the whole procedure.

Electrodes must not be touched by hand. Before exertion use the rough side of a new sponge to rub it, and wash it down with distilled water. At regular intervals anode should be cleaned, to get rid of the dark silver oxide layer formulated on it. The cathode is always dead white, and here hydrogen is formed. Cleansing can be avoided by frequently swapping the poles of the power supply.

two women are making colloidal silver

A deterrent example from one of the YouTube videos: two women are making colloidal silver, and they don’t seem to care about the state of the electrode.

The solution has to be heated continuously in order to get better results. 50 degrees in Celsius is sufficient. I wouldn’t use a microwave oven for this purpose. The most practical way is to place the bottle, in which the colloidal silver is made, into a water-filled pot.

During the production the solution should be stirred, in order to evenly spread the particle cloud between the two electrodes.

For this purpose a glass rod, a new aquarium air pump, a propeller driven by a tiny electrical engine (metal mustn’t come into touch with the silver solution) can be used, as well as, using the principle of magnetic stirring.

Although it is really witty, I don’t recommend the latter, because the colloidal silver is magnetic field sensitive. The following clip demonstrates the principle of magnetic stirring, created by simple Lego elements:


Microscopic particles of silver are photosensitive. A dim, if not dark, environment is necessary during production. Do this as long as the ready-made colloidal silver, filtered by paper based coffee filter, doesn’t get into the brown colored bottle, which now has a potent filter effect.

Overly complicated? Yes, pretty much it is.

The other half of YouTube videos describe the use of devices, which have been developed for colloidal silver production at home. What we definitely have to know about these machines: each of them is capable to produce ionic colloidal silver. It’s not a problem in itself, as the majority of colloidal silver solutions that can be purchased commercially are the same – they contain silver ions. However, it does matter to what extent they contain these ions.

They work with mainly dashed DC; the better ones operate in power generator mode, additionally they may contain comfortable functions, just like switching off automatically at the end of a course, changing polarity, stirring and heating the solution.

If this guide was useful to you, please don’t forget to “like”! Thank you.

Read more: How to Make Colloidal Silver Generator