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How does Meditech oximeters operate

How does Meditech oximeters operate?
The oximeter works according to Lambert Beer Law,
 
Our oximeters omits a near-infrared pulse (a 660nm ray and 940nm near-infrared ray). The light passes through the skin, "hits" red blood cells, and is partially absorbed. The part which isn't absorbed is picked up by the photoelectric sensor, and being analyzed. The analysis is calculated according to the haemoglobin (R Hb) and Oxyhemoglobin (02 Hb) reflectance factor. Reflectance factor, is an index that shows the exact amount and length of light that a substance will absorb, when it is being "hit" by a certain wavelength of light.

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Meditech Equipment Co.,Ltd is part of Meditech Group. Product(s) described may not be licensed or available for sale in all countries. Sonotech, Sonovet, iSonic, FOs2pro, Dolphi, Defi, HeartRec,miniScan,Cardios,SpirOx,iBreath, Meditech and all corresponding design marks are trademarks of Meditech. The symbol indicates the trademark is registered. Patent and Trademark Office and certain other countries. All other names and marks mentioned are the trade names, trademarks or service marks of their respective owners. Please see the Instructions for Use for a complete listing of the indications, contraindications, warnings and precautions.

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