Oh yes, and I meant to have said that the second batch had a very strong 
tyndall even though it had a lower TDS reading than the one with the weak 
tyndall. dee

On 12 Apr 2010, at 19:10, Marshall Dudley wrote:

> If CS is yellow or clouldy it indicates that it has a large number of large 
> particles. When you add H2O2 it converts the colloid to a combination of 
> dissolved Silver Oxide and 2 particle colloid, which is very small particles 
> and will ave very little Tyndall, and be clear.
> 
> Marshall
> 
> Dorothy Fitzpatrick wrote:


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