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PrimeLab 1.0 Multitest Manual De Usuario página 100

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COD HR
(17)
Measurement procedure:
The steps up to the selection of the parameter value to be determined are the same for all
procedures and described on page "TEST-5". Please observe the important notes for
accurate measurements on pages "TEST-8" and "TEST-9".
!
The individual steps of the measurement procedure are shown on the display.
1) Prepare two cells (16mm) "COD-17-HR". Label one as zero cell.
One-Time-Zero:
Measure new ZERO
Use last ZERO
1
2
3
!
2) Open the first cell (zero) and fill with 0.2 ml deionised water.
3) Open the second cell (sample) and fill with 0.2 ml of your sample water.
4) Cap both cells and shake to mix. CAUTION: Cells turn hot!
5) Put the cells in a preheated thermoreactor for 120 minutes at 150°C.
6) CAUTION: cells are hot! Remove the cells from the thermoreactor and
allow to cool to 60°C or less.
7) While warm invert cells several times to mix the contents well. Allow to
cool to room temperature.
8) Place the adaptor for 16mm vials into the device.
9) Place the zero cell and the light protection cover into the device and
4
then press ZERO.
10) Remove the cell from the device.
11) Place the sample cell and the light protection cover into the device.
4
Then press TEST.
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0 - 15000 mg/l
Name on device: 17-COD-HR-pre
Use button 3 (arrow down) to scroll through the steps.
Use button 4 to skip the notes.
If after switching on the device you have already performed the
ZERO (baseline) adjustment for the same type, the following
message is displayed:
-> Measure new ZERO
-> Use last ZERO
4
For the sake of precision select "Use last ZERO" only
if the stored ZERO value is used with the
same cuvette and the same water sample for the test!
(O )
16 mm cuvette
2
COD-17-HR
= continue with step 9)
= continue with step 11)
Continued...
67

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