Hi AG.
If you have a pen laser  you could check for tyndall.

Sam

On 6/19/06, Silver Smith <[email protected]> wrote:

I have have been saving, cleaning  and using empty soft drink bottles to
store and give away CS in.  I have several bottles (green) old Sprite
bottles on the shelf full of something?  Is there a way to tell if I have
put CS in them OR  if they are just in the cleaning process and have water
in them?  I usually clean 1st with tap water and let them sit a bit.  I have
tried to use my TDS meter but my tap water has a  similiar ppm reading to my
CS.  Do I remember something about dropping some salt in an aliquot and it
will form AgCl and turn cloudy?

Thanks,

AG