Hello everybody.
I need to know how to make my own reference solutions.
One to control / test kH and another to control and test Ca.
I make my own for PO4 and NO3 and they work really.
I do have a Mastertronic for auto-testing and I've tried to use ATI ref solution and GHL ref solution but the test values comes back to high or to low. ATI doesnt offer insight in offsets so no way to know if 8,0 is "great enough" when the ref solutions says 7,5 is the answer.
GHL has to big offset - +/- 0,2 makes it impossible to use as a good control.
So please, if someone has a formula for "how to make your own" - kh and ca solution please post it...
Best regards
Andre
I need to know how to make my own reference solutions.
One to control / test kH and another to control and test Ca.
I make my own for PO4 and NO3 and they work really.
I do have a Mastertronic for auto-testing and I've tried to use ATI ref solution and GHL ref solution but the test values comes back to high or to low. ATI doesnt offer insight in offsets so no way to know if 8,0 is "great enough" when the ref solutions says 7,5 is the answer.
GHL has to big offset - +/- 0,2 makes it impossible to use as a good control.
So please, if someone has a formula for "how to make your own" - kh and ca solution please post it...
Best regards
Andre