Vetronic ICON Oxygen Analyser. In-circuit oxygen monitor designed for use in veterinary operating theratres and intensive care wards. Can be placed on the fresh gas outlet of an anaesthesia machine or within the re-breathing limbs of a circle system, wherever the oxygen concentration needs to be know. Uses a single AA battery that has a lifetime of approx. 1 year when used everyday. Sensing element is a long life galvanic sensor that has a working life of approx. 2 years.