Production Techniques and Chemistry > Colloidal Silver Production

Requesting help.

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kephra:
If you are having trouble with your process and seek help, please note the following.

1) Read the Articles.  The answer to almost all questions can be found there.
2) Supply details about your process.  Saying that something didn't work, without providing details is like saying "my car doesn't run, whats wrong with it"
3) Supply photos if possible so we can see your setup.
 
The more details you supply with your queries, the faster and better the responses will be.

nix2p:

--- Quote from: kephra on September 04, 2017, 05:38:13 PM ---If you are having trouble with your process and seek help, please note the following.

1) Read the Articles.  The answer to almost all questions can be found there.
2) Supply details about your process.  Saying that something didn't work, without providing details is like saying "my car doesn't run, whats wrong with it"
3) Supply photos if possible so we can see your setup.
 
The more details you supply with your queries, the faster and better the responses will be.

--- End quote ---

- I like that! Thank you Kep.

Rettan:
I dont have any plateout on the cathode, but the anode gets very dark.

What product is it that builds up on the anode that makes it shades of grey and even total black if you let it go without cleaning for like 15 min. Also what happens if you dont clean it? Will silver still continue to be oxidized into the water? 

kephra:
The black on the anode is undissolved silver oxides which is normal.  It does not prevent silver ions from entering the water, and does not affect the calibration.  The only thing to watch out for is the oxide flaking off into the water.

Rettan:
I had an interesting experience with bought 10ppm ionic silver. I used this product instead of distilled/deionized water when i tried to produce high ppm Colloidal Silver. This is what happened:

I used 500 ml of said product, dissolved 1/2 tablespoon of gelatin in it. Then heated it with a double-boiler to like 80-85 degrees Celcius, I wanted closer to boiling point but couldnt without a lid, and a lid would have prevented the electrodes.

Then when it was dissolved I put in 53 mg of sodiumcarbonate (Using an accurate scale) and some glucose syrup (about the volume specified in your silvertron manual+ some extra for safety). I might have made a mistake here, because the gelatin wasnt fully dissolved yet when I added the sodiumcarbonate + glucose syrup, dont know if this matters.

Usually when i make 20 ppm ionic Colloidal Silver and then reduce it with glucose syrup the shift in color will begin already at maybe 40 degrees C, and then be complete at 50-55 C.

Since I had used my store bought 10ppm IS (which I have reduced as it is on earlier occasions just to check if it really was silver in it) I expected to see a color change in the interval of about 50 degrees C when i started heating the solution, (still hadnt put in the electrodes at this time).

Strangely I didnt see any difference in color at 60 degress C, so I put in more sodiumcarbonate (about another 53mg, thinking the pH was wrong), I also added some more syrup (about doubling that too), still nothing happening at 60 degrees.

Then when it reached 65-70+ degrees C, it started to change color fast, and it became much darker  (with a little reddish tint) than what the same product (10 ppm bought IS) had been when i reduced it without gelatin on earlier occasions, also without gelatin it turned light transparant yellow at about 50-55 degrees C.

I then continued at about 80-85 degrees C to put in the electrodes and had them going for 40 minutes at 15 volts and 15 mA (have bars for electrodes).

The solution now went very dark. But according to my brief calculations in my head, the solution should only be 80-90 ppm (due to the 10pp already in the IS from the beginning)

My question is:
Was it due to the gelatin that the product changed color at a much higher temperature, and then became very dark (a little reddish actually). Let me remind you, this was only 10ppm bought IS (which I have reduced from the bottle to make very light yellow colored product before) but it looked like 80 from the pictures I've seen here. So before I even put in the electrodes the solution already looked like a 80ppm (albeit a little more red) solution from this site. Could It be because the gelatin made the already formed 10 ppm IS to clump together making the colloids bigger and causing them to shift in color, to darker and more of a reddish tint?

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