oximeter

The instruments in which the oxigen gas of a determined quantity of air was ascertained, received the name of EUDIOMETERS, because they were considered as measurers of the purity of air. They are however more properly called OXIMETERS.

The Millikan oxymeter, with which Dr. Howard Bierman has been working and which he has discussed with this group, can be attached to the external ear and gives prompt information about oxygen saturation. It is so calibrated that the administration of 97 to 100% oxygen to normal individuals causes an increase of 5 per cent in the oxymeter reading.