Electrochemical flow cell

Method of analyzing a fluid sample comprising:

• a) providing a detection system for analyzing a fluid sample, the detection system comprising
• a separation system for separating different analytes from the fluid sample and an electrochemical flow cell, wherein the electrochemical flow cell is controlled by an electrochemical detector or potentiostat and the electrochemical flow cell is connected to the separation system to detect the separated analytes from the separation system;
• and
• wherein the electrochemical flow cell comprises a first member comprising a first working surface, the first working surface comprising a sample outlet, a second member comprising a second working surface with a working electrode, the first and second member being connectable to each other to create a chamber in between the first and second working surface, the first working surface being opposite and spaced apart from the second working surface and the sample outlet being directed at the working electrode, and adjustment means for stepless adjustment of a distance between the first working surface and the second working surface, wherein the first or second member comprises:
• a housing comprising an inner screw thread defining a body axis (BA),
• a rotatable member comprising an outer screw thread which engages with the inner screw thread of the housing, the rotatable member further comprising an inner screw thread, and
• a working surface member comprising the first or second working surface, the working surface member comprising an outer screw thread which engages with the inner screw thread of the rotatable member,
• wherein the outer screw thread of the rotatable member is oppositely wound with respect to the inner screw thread of the rotatable member, and
• wherein the working surface member is rotatably fixed with respect to the housing and the working surface member can slide with respect to the housing in a direction of the body axis (BA) upon rotation of the rotatable member;
• and
• b) analyzing the fluid sample using the detection system.