Change Of The Default Setting Of The Chemical Form; Run A Reagent Blank - Hach Portable Spectrophotometer DR 2800 User Manual

Standard Operations

5.4.6.1 Change of the default setting of the chemical form

5.4.7 Run a reagent blank

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1. Press Options>More>Chemical Form.
2. Select the Chemical Form.
Note: The stoichiometric conversion of the measurement result is
carried out automatically.
Note: The selected Chemical Form will appear on the display. Test
results will be calculated and displayed in this chemical form.
1. Insert the sample cuvette or blank (depending on the working
procedure) into the cell compartment.
2. In the result display, press Options>More>Chemical Form.
3. A list of available evaluation forms appears. Select the new
default setting.
4. Press Save as Default.
The current result and all further measurements will be displayed in
the new chemical form.
Some of the stored tests/methods include the "Reagent Blank"
function. This enables the reagent blank value to be measured and
then taken into account in calculating the measurement result.
Measurement/analysis of a reagent blank:
1. Prepare the test/method in accordance with the (working)
procedure. Instead of a sample, deionized water is used to
determine the reagent blank value.
2. Select the test. If required by the (working) procedure, insert
the cell with deionized water into the cell compartment. Press
Zero.
3. Insert the prepared sample cell into the cell compartment.
Press Read. The result is displayed.