Here are some pictures of 100ppm CS I made using my constant current setup with sodium hydroxide as an electrolyte, and
cinnulin as the reducing agent.
I made 250 ml of 100ppm CS, and then diluted 200ml of the product with 800ml of water to make 20ppm.
Here is the 100ppm made by electrolyzing 250 ml distilled water with 4 drops of 1M NaOH plus 2.5ml of my cinnamon extract for 25 minutes. You can see my stirrer magnet in the bottom.

And here is the result after dilution with 800ml water.

I did not use distilled water to dilute it. I used water from my reverse osmosis drinking water filter. This saves a lot of distilled water.
I do find I have to clean my anode after every run, but there is almost no silver plated onto my cathode.
The entire process was carried out cold, which is another big advantage.
The next photo is another 20ppm sample with a flask of my cinnamon extract beside it. This batch of silver was made by electrolyzing 250ml of DW for 10 minutes with 3 drops of 1M NaOH plus 1ml of the cinnamon then diluting it with another 250ml water to bring it back to 20ppm.
