Hi All...
I have and use the roche aviva nano meter...
Just a thought for you - before my battery ran out it gave some hit n miss readings out!
Realised it wasnt me after all - when the battery went on it...
Roche do a great customer services too, provided me with new batteries, control solution and advice.
Also said if was still on the blink - to ring them straight back and they would issue a new one out to me.
Luckily it 'was' fine after replacing the battery and run the control solution through it and reset it again :thumbup:
Hope this helps you foomanchu.
Anna.