My new test kit arrived from Palintest Australia this morning. Now that I can perform the required tests I have promoted myself from the Just Getting Started forum to this one.
Results this morning's tests, with the new kit, are:
pH- 7.6 (evaporation had dropped the water level quite a bit until good rain yesterday topped it up)
Apparently the Palintest SP315C kit has been superseded, at least in Australia by the SP319/ML kit.
It uses (mostly) test tablets and is easy to use.
Before I start trying to get my head around the pool calculator I would appreciate advice on these measurements, just to get me started on the right track. I haven't made any adjustments, but normally need to add about 250ml of Hydrochloric acid most days to keep the pH down.
Many thanks for the advice received so far, without which I would not even have got to this stage.