Water I.D. Primelab 2.0, Manual

Page: 112 / 301

(80)
COD MR
0 - 1500 mg/l (O₂)
Reagent-Kit
Internal Name: 80-COD-MR-pre
40
40
60 80
100
40
30
30
20
20
20
20
10
10
0 0
°C
°F
COD MR (tubetest) (COD-80-MR)
Measurement procedure:
1 Prepare 2 COD-MR cuvettes (16 mm). Label one as a ZERO cuvette.
2 Open the first cuvette (ZERO cuvette).
3 Fill 2 ml distilled water into the cuvette.
4 Open the second vial (sample vial).
5 Fill 2 ml sample water in the cuvette.
6 Screw the lid back on both cuvettes.
7 Gently swirl the cuvette to mix the liquid well. Caution, heat development!
8 Place cuvettes for 120 minutes at 150 °C in the preheated thermoreactor.
9 CAUTION: Cuvettes are hot!
10 Remove the cuvettes from the thermoreactor.
11 Let the cuvettes cool down to at least 60 °C.
12 Flip both 16 mm cuvettes to mix the liquid well.
13 Let the cuvettes cool down to room temperature.
14 Place the 16 mm adapter in the PrimeLab.
15 Place the ZERO cuvette in the PrimeLab.
16 Put on the lightshield.
17 Start ZERO measurement.
18 Remove the lightshield.
19 Remove the cuvette again.
20 Insert the sample cuvette in the PrimeLab.
21 Put on the lightshield.
22 Tap TEST to perform the measurement.
23 The measured value is immediately displayed.
Notes:
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