Learn more about the device at : www.breathindicator.com
Available at: http://www.amazon.co.uk "HABI-The Handheld Breath Indicator". You see the rapid colour change produced by the carbon dioxide in each exhalation. When placing the indicator in front of the lips of the baby the irregular change of colors on the surface illustrates the variable flow of air through a stuffy nose. Areas that remain green/blue correspond to little or no flow due to a congested nostril. Normal breathing produces clear yellow color on the entire surface in synchrony with breathing.
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