A sensor is provided that is useful for assaying a component of a biological fluid such as blood, urine or milk, and comprises a chamber having an inlet, a liquid containing portion and a vapor containing portion. The liquid and vapor containing portions are in fluid communication. A pressure monitor...http://www.google.com.au/patents/US6733984?utm_source=gb-gplus-sharePatent US6733984 - Sensor for analyzing components of fluids