Nitric Oxide Calculator

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  • This calculator is designed to give an approximate calculation about the final concentration of iNO in the ventilator circuit.

  • Note that this does not replace an iNO measuring device (such as a PrinterNOx or NOxBox). However, occasionally these devices may malfunction or not read accurately, in which case this calculator will give an approximation of the expected iNO concentration.

  • Note that if the metHB level is higher than expected despite the meter reading the appropriate iNO concentration, please check the meter calibration and function. This may include obtaining another meter and cross-checking readings.



Ventilator gas flow rate
Nitric oxide flow rate
ml/min This calculator assumes that the iNO concentration in the tank is 880ppm