In a recent post to the list I recall that I said that the Beck instructions
that I had did not mention adding salt to the distilled water.  In going
through my files again, I find that I was incorrect and that the instructions
received from Action Electronics does mention adding a salt solution to the
distilled water.

Quoting from the instructions:
 
"Then place the silver electrode wire into a tall, narrow glass containing 8
oz of distilled water and a drop of saturated salt solution.'

The instructions then go on to say:

"Making a saturated salt solution for distilled water.  This is made from pure
salt such as 'Light Gray Celtic Sea Salt' from the Grain and Salt Society,
P.O. Box DD, Magalia, CA 95954.  Do not use table salt as it contains
additives like iodine, aluminum and silica desiccates.  Mix one and one-half
teaspoons of salt in one ounce of distilled water.  Let stand for a few hours
and filter off the top liquid.  The salt must be dissolved in water before
using.  The salt solution may be stored for repeated use in a 1 oz brown glass
dropper bottle.  Add a little silver colloid to this to prevent bacteria
growth.  Then use only 1 drop of this saline solution each time you make
silver colloid.  It is important that you do not use excess salt or you will
not be making silver colloid but silver chloride. As more salt solution is
added, the silver comes off the electrode faster, but the micron size also
gets larger.  Using one drop per 8 oz water is the best for making a particle
size than can be absorbed more thoroughly.  As little as 4 drops can change
the chemical formulation into silver chloride."

H. Davis