Method for determining an analyte in a water sample by means of a mobile water analysis arrangement

A method for determining an analyte in a water sample with a mobile water analyzing system having a basic unit and a test element insertable in the basic unit, the method comprising:

• providing the test element comprising:
• a sample line with an inlet opening configured to receive the water sample,
• a measuring section forming a measuring track and configured to allow determination of the analyte,
• a first reagent section disposed behind the measuring section, and
• a reagent disposed in the first reagent section of the sample line;
• providing the basic unit comprising:
• a test element receptacle configured to hold the inserted test element, and
• an analyzer with an analyzer measuring track formed by the measuring section of the test-element;
• inserting the test element into the test element receptacle;
• transporting the water sample forward from the inlet opening to the measuring section;
• performing a first analyzing of the water sample in the measuring section with the analyzer;
• transporting the water sample forward from the measuring section to the first reagent section;
• transporting the water sample backward from the first reagent section to the measuring section;
• and
• performing a second analyzing of the water sample in the measuring section with the analyzer.

A test element for a mobile water analyzing system, the test element comprising:

• a sample line with an inlet opening configured to receive a water sample;
• a measuring section forming a measuring track and configured to allow determination of an analyte;
• a first reagent section disposed behind the measuring section;
• and
• a reagent disposed in the first reagent section of the sample line.