[email protected] wrote:

>      Petemec,
>
>      Clear CS with a brigth T.E. (tyndall) most probably says
>      large particles.
>
>      **wouldn't large particles give my solution a
>      colour(absorption)?
>

CS absorbs though the spectum depending on size.  Smallest particles
absorb in the ultraviolet band, then that is followed by violet, blue,
green, yellow, orange, red, and finally infrared.

Since you cannot see ultraviolet and infrared, absotption in these bands
are invisible to the naked eye and appear clear.

Marshall