Version 13 – 01/2019
9
4.4 Test measurements
Perform a test measurement for a first measurement or for a measurement after a
longer inactivity of the device.
Use all buffer solutions (4.01 / 7.00 / 10.00)
First, prepare the buffer solutions.
Place one buffer solution in each of the 3 jars, cut the bags open at the mark. DO
NOT decant the buffer solutions. Do not store once opened buffer solutions and do
not reuse them and do not dispose of in the household waste.
Fill test tubes with water (Tap water in G/A/CH, still mineral water in all other
countries; NO distilled water).
Remove the protective cap.
Connect the probe (4) to the measuring device (3)
(bayonet lock, see fig. 2a and 2b).
The meter displays "desinfected?"
Confirm by touching the touch sensor (see Fig. 3).
Immerse the probe tip in the buffer solution.
The display shows "start?"
Confirm with a tap on the touch button.
Wait for the (long) beep that indicates the end of the measuring process.
Check if the displayed value is correct.
Now disconnect the measuring device (3) from the probe (4).
Briefly insert the probe into the water-filled test tube (1) and then carefully dab
the probe tip with the sterile gauze.
Results comply (= match with the pH value of the buffer solutions):
Continue with chapter 5.2.2 Measurement
Results do not comply:
Continue with chapter 5.1 Calibration
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