Calibration card for photoluminescent oxygen sensors with zero point maintained with a metal-air battery

摘要

A calibration card (10) and method of using the card (10) to calibrate an analytical instrument capable of reading a photoluminescent oxygen probe. The card (10) includes at least (a) a first mass of an oxygen sensitive photoluminescent dye (51) retained within a hermetically sealed space so as to isolate the dye (51) from environmental oxygen, and in fluid communication with an activated metal-air battery (70) whereby any oxygen permeating into the hermetically sealed space is quickly consumed by the battery (70), and (b) a second mass of an oxygen sensitive photoluminescent dye (52) in fluid communication with the environment whereby the second mass of photoluminescent dye (52) is exposed to an environmental concentration of oxygen.