Production Techniques and Chemistry > Colloidal Silver Production
Requesting help.
Smoke7:
Hello all.
Can someone identify/advice about what went wrong or why I’ve got discoloration on my colloidal silver?
The generator I used I made myself. I used 30V 1A DC power supply with reverse polarity board which is reversing every 30 second +/- I used 10 drops of Silverlight I made last year by backed backing soda, and I just made a new reducing agent right before start creating the silver. The first batch went very well, however this one not so much. Another thing is when I added reducing agent and start heating up (I used the pot with boiling water and put a beaker on top) It took about 15-20 minutes to turn perfectly amber/golden color (I used 8 drops of (Karo 50/50%) reducing agent for 2000ml). After that I let it cool down and put it inside the cardboard box overnight. The next morning the beaker was covered in silver (I should have taken a picture before I washed the beaker) and the silver turned into a milky color.
P.S I ran the generator for about 4 hours with ¼ silver rods and magnetic steering on very slow speed. I have no Idea how much PPM is in it but TDS-3 was showing 34PPM after completion and only 15PPM next day. It looks like the whole silver was left on the bottom and on the sides of the beaker. Any help will be greatly appreciated.
Thank you
cfnisbet:
Looks like it was generated at a current which was too high and with reduction which was too fast. The particles are too big.
chrisflhtc:
If you reversed polarity you made a copper colloid
ICK Don't do that.
Sorry I thought were using a copper cathode NvrMnd
Chris
Smoke7:
Thank you for all help and replies. I rebuild my generator and added Adjustable Step Down Buck Converter I took from my Arduino project.
I also rad some recommendation on this site and throw away reverse polarity board (as you suggested) and will continue to read on this site (it just soooo many advice's and confusion with this project) but I am not giving up so easy :) I will try another batch and will post here my result. I still have one question I couldn't find answer yet!!! If I am using 2L beaker with 2L distill water do I have to increase elecrtolight and reducing agent? Or if somebody will be so nice and just post here how many drops electrolight and reducing agent for 2L will greatly appreciated. Oh one more thing is it still 60min for 2L or should I shoot for more time to get 20PPM
Thank you all.
PhiPhi:
Smoke7 I'm still trying to work all this out myself but I would save your distilled water by making smaller 250ml batches first, when you have succeeded go 500ml and work up to bigger quantities. Also do you have an accurate multi-meter that can monitor the current as a consistent current seems to be the key to quality?
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