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Color Ranges of a Typical Colorimetric Device

End-tidal carbon dioxide (EtCO2) can be measured by colorimetry and capnography. Colorimetric devices provide continuous, semi-quantitative EtCO2 monitoring. A typical device has the following three color ranges: Purple—EtCO2 is less than 0.5% Tan—EtCO2 is 0.5–2% Yellow—EtCO2 is greater than 2% Tip ...

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