Importance

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Abstract

Apparatus for measuring or detecting a chemical entity in a liquid sample, the apparatus including a first module operationally connected to a second module, the first module having a flow passage for the sample, the flow passage including a sensor for measuring or detecting the chemical entity and .Iadd.a .Iaddend.pump .[.means.]. for advancing the sample along the flow passage, the second module including .[.means.]. .Iadd.an actuator .Iaddend.for actuating the pump means, and the second module being connected to the first module via .[.connecting means.]. .Iadd.a connector .Iaddend.permitting disconnection of the first and second modules and connection of a replacement first module to the second module.

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First Claim