If possible blow-off the first 5 minutes of boiling and then route the steam 
throught the condencing coils.  that way is there are any organic compounds tha 
thave a boiling point near that of water they will boil off first and not go 
through your still.
   
  "Ole Bob"

sickleave48...@aol.com wrote:
      I have a cheap 1 Gallon water distiller and find it works best if do not 
fill it up.
  I distill about 3 quarts at a time.
   
  Bob