I've made no mention that this has ever been my intention; merely to have a rough idea how the CO2 levels change over a 24 hour period and longer.I agree with the reservations of others about continuous pH monitors. That's why I would be very hesitant about using one of these to control CO2 injection
I appreciate there's always margin for error and results also rely on 'ideal' conditions; Hanna do make a 'Millesimal Buffer Solution' which is accurate to ±0.002Something's amiss. The Hanna buffers permit calibration to two decimal places so how can they then claim that it's accurate to three decimal places, i.e. +/-0.005pH?
so could possibly support the ±0.005 of the HI-11102 HALO device although I'm just guessing here.
I think if I need a device this would be more than accurate for my needs and is only to keep an eye on the CO2 levels and monitor them out of interest as much as anything else.
Thanks for your input though