I do like the idea of reg dil flushes to verify cells indeed i recall proposing such a thing years ago when my inspiration cells were trying to get me killed (temp comp faulty) but it does remind me of my experiences back then..
...flush
...i should get 1.2
....i got 1.2
cool
but i was subconciously stopping flushing when i got the ppo2 i was expecting to see
flushing longer may/did at times change the results.
i found myself doing similar when analysing gas
my point is only that the flush needs to be thorough (but i am guessing this has been designed into the unit making it easier) and not to stop flushing as soon as the expectant ppo2 is displayed. the trick to me was to not calculate the expected ppo2 before the flush.