Hi Reid,

Some time ago the technical source of light adsorption by particle size was
cited on this list and as Marshall of Roger pointed out the the T.E. is
affected to the first power by the concentartion and the brightness to the
thrid power of the particle size. Alos the color adsorption that happens
when white light is passed through it is a function of particle size.

So a bright T.E. and a green color screams "large particles."

The people on this list have been schooled that color means large particles.

"Ole Bob"



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