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SPM300 SpirometerInfection-free patented sensing method. The technology used in this unit differs greatly from existing pneumotachometer or turbine methods, common in other manufacturers systems. The Bionet system utilizes a newly patented sensing method (SmarTube™) based on Bernoulli's Law. As the Bionet unit does not use a filter, screen or turbine; which causes air friction or an inertia problem, the system achieves a much greater accuracy, so reducing measurements errors remarkably.
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