Scope and Contents Used in Addenbrooke's Clinical Biochemistry Department to measure carbon monoxide in blood, the gas was evolved from the patient's blood sample in one compartment, and diffused into a measurement solution of palladium chloride (which changed colour) in the other compartment. Professor Edward Conway developed his Units in Dublin in the early 1930's for a variety of analyses on small blood samples (the carbon monoxide method originated in 1948), and they continued in use until becoming...