An instrument used to measure the alkalinity or acid-base balance of blood.
From 'hemo-' (blood, from Greek 'haima'), 'alkali' (from Arabic 'al-qali'), and '-meter' (measuring device); a 19th-century medical term for analyzing blood chemistry.
This wonderfully complex instrument represents the birth of modern medical diagnostics—being able to measure blood chemistry precisely changed medicine from an art into a science!
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