I have been making my own CS 
for a long time now.  Why any one would
spend money on purchasing it is beyond 
me.  I even sell it on my web site.   The studies
indicate that the weaker solutions are better
than stronger.  The size of the particals
is determined by the amount of time
so smaller particals are obtained by 
shorter times.   5 min = 5 PPM 
and smaller partical size.   
the people on this and the rife 
list are in the know, and won't fall 
for the mild silver protean
crap, as a matter of fact that is the 
olnly form of CS that will turn 
your orgeans gray.