Water I.D. Primelab 2.0, Руководство пользователя

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(64) Chlorine Dioxide
(in absence of chlorine)
0.00 - 7.60 mg/l (ClO₂⁻)
Liquid
Internal Name: 64-Chlorin-Dio-liq
10ml
30ml PL DPD 1 A (PL30DPD1A)
30ml PL DPD 1 B (PL30DPD1B)
30ml PL DPD Glycine (PL30DPDGlycine)
Measurement procedure:
1 Fill 10 ml test water into a clean 24 mm cuvette.
2 Screw the lid back on the cuvette.
3 Insert the cuvette into the PrimeLab. Pay attention to the arrow on the front of the cuvette.
4 Start ZERO measurement.
5 Remove the cuvette again.
6 Unscrew the lid from the cuvette.
7 Empty the cuvette to a few drops.
8 Add 3 drop(s) of PL DPD 1 A into the cuvette.
9 Add 3 drop(s) of PL DPD 1 B into the cuvette.
10 Fill the cuvette to 10 ml with the sample water.
11 Screw the lid back on the cuvette.
12 Gently swirl the cuvette to mix the liquid well.
13 Insert the cuvette into the PrimeLab. Pay attention to the arrow on the front of the cuvette.
14 Tap TEST to perform the measurement.
15 The measured value is immediately displayed.
Notes:
The DPD reagent buffers the pH value of the sample water in the range of 6.2 to 6.5, which is
essential for colour development. If the sample water is very alkaline or acidic, this must be
adjusted to a pH within the range of 6 to 7 by addition of 0.5 mol/l sulphuric acid or 1 mol/l
caustic soda, respectively, before the DPD reagent is added.
Do not clean glassware and equipment with household detergents, as these could greatly
reduce the measurement result. To prevent any contamination, the cuvette, lid and stirrer
should be stored in a 0.1 % sodium hypochlorite solution for one hour. Then rinse with distilled
water, thoroughly.
Turbidity caused by high concentration of calcium ions will affect the measurement result. To
prevent that, please use DPD HC (High Calcium) reagents.
T43/204 T43/204