Accuracy of standard and enhanced Innocor gas analyser.

Summary of error in functional residual capacity (FRC) calculated by multiple breath washout for a lung model at different FRC and ventilation rates. FRC are shown excluding the equipment dead space of 59 ml, and error is quoted as a percentage of the lung model FRC only (excluding deadspace). Precise ventilation rates varied with the lung model settings specific to each FRC and were 10.9, 21.8, 31.6 min−1 for 0.5 L FRC, 10.8, 21.7, 31.5 min−1 for 1 L FRC, and 11.8, 20.5, 31.3 min−1 for 2 L FRC. T90: 10–90% rise time of the gas analyser.