So after I put in the second drop of H202 this would have made the particles 
smaller because I now have a weaker tyndall effect?  dee

On 12 Apr 2010, at 21:56, Marshall Dudley wrote:

> Since Tyndall only show up on particles, I would expect any sample with 
> similar ppms to have more tyndall for higher particle concentrations, 
> although particle size really has much more effect than quantity since the 
> ratio is linear with concentration, but goes up to the 4th power of size.
> 
> Marshall
> 
> Dorothy Fitzpatrick wrote:


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