Water I.D. Primelab 2.0, Manual

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(39)
pH-value MR
6.50 - 8.40 (pH)
Liquid
Internal Name: 39-pH-MR-liq
10ml
65ml PL pH 6.5 - 8.4 (PL65PhenRed)
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 Add 6 drop(s) of PL pH 6.5-8.4 into the cuvette.
8 Screw the lid back on the cuvette.
9 Gently swirl the cuvette to mix the liquid well.
10 Insert the cuvette into the PrimeLab. Pay attention to the arrow on the front of the cuvette.
11 Tap TEST to perform the measurement.
12 The measured value is immediately displayed.
Notes:
PH value out of the range of pH 6.5 to 8.4 can lead to incorrect test results. If you are not sure,
a control measurement by pH electrode is recommended.
High chlorine values can lead to incorrect test results. Add small amounts of sodium thiosulfate
before adding the liquid reagent.
Make sure the liquid reagent drops are of equal size.
Liquid reagents should be stored at temperatures of 5 - 10 °C in securely closed bottles.
Shake the liquid reagent thoroughly before adding the liquid to the vial.
An alkalinity level > 40 mg/l CaCO₃ is required to prevent inaccurate readings.
T152/204 T152/204