Author Topic: Quickstart Guide of making Colloidal Gold  (Read 1233 times)

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Offline PeterXXL

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Quickstart Guide of making Colloidal Gold
« on: January 22, 2015, 05:57:38 AM »
Kephra, in your quickstart quide on how to make colloidal gold....

http://www.cgcsforum.com/index.php?topic=757.0

...you describes different methods.

What's you opinion about the method that is described here...

http://saltlakemetals.com/Make_Colloidal_Gold.pdf


Offline kephra

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Re: Quickstart Guide of making Colloidal Gold
« Reply #1 on: January 22, 2015, 06:32:56 AM »
The chemist at Salt Lake Metals used to be a forum member, and I think he got the formula from a reference I posted.  It is called the Turkevich method and has been used for 50+ years.  It works ok, and produces good CG, BUT its slower than the maltodexrin method and required a full boil.  I posted a youtube video showing it done years ago.  For many years, it was the standard way to make colloidal gold in the lab.  If you have trisodium citrate, give it a try. 

The maltodextrin method is faster and produces as good of a result in about the same amount of time it takes to make a cup of coffee.
Colloidal Silver is only a bargain if you make it yourself.