Morning List,

It has been explained to me that a sizable quanitity of solution is required to 
perform all relevant testing as the testing should be done on an individual 
basis to achieve optimum accuracy.  To perform such tests an adequate quantity 
is required for *each* test done which would mean a litre or more may be 
required, (that's just an example figure), and obviously it would need to be of 
the same 'batch' and not seperate batches to achieve the most accurate results 
for any required testing and for any given solution.

For example, if one wants to know the ionic content a test is done for that, if 
one wants to know the particle content a seperate test is done for that, if one 
wants to know the size of the particles a seperate test is done for that and so 
on.

That's how it has been explained to me to achieve optimum accuracy.

Neville.