Ionode IJ pH V5.1 - Manual (Page 29)

Ionode IJ Instruction Manual 29
Symptom Possible
Causes
Remedy
Large
Offset
(>0.5pH) Insufficient
Sleeve
Electrolyte See 3. Preparation
Junction
Blocked or
unclean See 4.6
Troubleshooting
Drift
Electrode
Polarised Replace electrode
Non-
Linear
Over
three
Buffers Contaminated
Buffers Replace buffers
Note: alkaline
buffers absorb
carbon dioxide and
become inaccurate
when exposed to
air.