These instructions are very basic and I highly suggest doing the research on how to make Colloidal Gold yourself safely. Gold Chloride is a neurotoxin and should not be ingested. This method involves a stage in which Gold Chloride is a part.
Although this method is not hugely difficult it requires some dedication to say the least.
I offer this information only to demonstrate the level of expertise required. Do not misconstrue it as complete or instructions for anything. For the full method please viisit the Colloidal Gold and Silver Forum at http://www.cgcsforum.com/index.php
Materials: .999 fine Gold wire 22 guage, 6″ to 1' in length. Copper wire 12ga., Sodium Chloride (NaCl) Table salt, Sodium Citrate, DC Power supply capable of 500ma @ 30volts, 500 ml Pyrex beaker, heat source, distilled Water.
Making stock solutions of chemicals in .05M strength:- dissolve 0.3 grams of NaCl (Sodium Chloride) into 100 ml of distilled H2O- dissolve 1.47 grams Sodium Citrate into 100ml of distilled H2O
A piece of .999 pure gold wire is needed. Long enough to protrude into water by an inch or more. A 14 gauge copper wire suffices for the cathode
Power Supply: The higher the volatge in DC the better for this method. Minimum 30v is mandatory at 500ma
Fill the 500ml beaker with distilled water. Add 30ml of stock .05M NaCl solution to the beaker. Add 10ml of the stock .05M Sodium Citrate solution to the beaker.Supend the rods into the water and attach the positive(anode) to the gold wire and cathode to the copper. Stirring cannot be over stated, This really is best done with a magnetic stirrer and hotplate. Heat close to boiling. Turn on power maintaining 500ma at 36 volts. There will be quite some bubbles coming off of the cathode and less from the anode. Stop when no more colour change is seen. The only acceptible colour is a deep red.