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.

