Xylem wtw K 800 DIN, Operating Manual

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K 800 Aging
ba15360d04 12/2021
21
Recommended accessories
Calibration line of a calcium ion sensitive
electrode
What to do if ...
Measured value
unstable
Store the reference electrode according to the instructions in its
operating manual.
Description Model Order no.
Exchange membrane cap for
potassium combination electrode K 800 K 800/AT 106672
Bridge electrolyte ELY/BR/503 106 575
ISA sample conditioning solution for K
+
measurement
ISA/K 106580
Standard solution 10 g/L potassium ES/K 120210
10-fache Konzentrationsänderung 10-fold concentration change
1 0.1 10
100 1000
~58 mV
mg/l K
+
10 10
10 10 mol/l K
+
10
-5 -3 -2 -1 -4
Cause Remedy
– Inner junctions not
sufficiently wetted with
bridge electrolyte
– Fill up bridge electrolyte until the inner
junctions are covered with bridge
electrolyte