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Thank you Scott That makes sense for the alarm settings. What is the the rationale behind the 1C tolerance limit between the chart and the displayed reading? If both are calibrated +/- 0.5 C. I assume both could be out by 0.5 C on the opposite end of the temperature scale, hence the 1C?

Hello Please help! I am wondering what the right setting would be for your low and high alarms for a blood fridge, if the calibration tolerance is +/- 0.5. For both the core and air Temperature. This is for my remote temperature monitoring systems. Thank you

Thank you. I will reflect on this and probably comeback.

Please help. I have read around the subject of uncertainty of measurement to comply with ISO15189, but I am still not any wiser. i don't think I am allowed to declare any uncertainty about my blood group results as this should not be variable otherwise my parents would be in trouble. But what about that anti-E that disappears with time? Only to re-emerge after a 2 unit transfusion at another hospital ?? Has anyone had that awkward conversation with the assessor about uncertainty with their results?

Been using the cytotherm- D4 for over 4 years. The thermostat switches off the thawer if the temperature is too high. The unit will also alarm if the temperature goes 1 degree above thawing temperature or if the plasma leaks. Can get messy if their is a leakage. But otherwise am happy with it.