wtw inoLab Level 3 Operating Manual page 241

Obviously incorrect
measured values
Electrode + test sample:
– Conductivity too low
– Temperature too high
– Organic liquids
Cause
– pH electrode unsuitable
– Temperature difference
between buffer and test
sample too high
What to do if...
– Use suitable electrode
– Use suitable electrode
– Use suitable electrode
Remedy
– Use suitable electrode
– Adjust temperature of
buffers or sample
241