An analysis system for measuring a plurality of parameters of a fluid sample comprises a housing, and a flow-through cell in the housing that has opposed surfaces with at least two ports in each surface. One of the ports is an inlet port, a second of the ports is an outlet port, and at least two of the...http://www.google.de/patents/US4361540?utm_source=gb-gplus-sharePatent US4361540 - Analysis system
