Ionode IJ pH - Manual

Warranty
IJ electrodes have a pro-rata warranty of 12 months from
date of purchase. Any electrode found to be faulty due to
manufacture within this time will be replaced.
Ionode reserves the right to limit or modify product warranty
if it is deemed that the electrode has been used in unsuitable
applications.
IJ electrodes have an expected lifetime of 2-4 years in ideal
samples at room temperature. This may be reduced in
chemically aggressive or abrasive samples and at high
temperatures.
Please visit www.ionode.com.au to register your purchase as
soon as you receive your electrode.
User maintenance and troubleshooting
All specifi cations and values are subject to change without notice. © 2009
Intermediate Junction Series
Short-Form
Operators Manual
Download a detailed manual at
www.ionode.com.au
IJ 44 A/C
pH electrodes
Symptom Possible cause Remedy
Drift Junction blocked Remove sleeve. Clean
glass stem and sleeve
Membrane not
clean Remove sleeve.
Clean glass membrane
Membrane aged/
damaged Allow longer measuring
time or replace
Temperature
changes Stabilise temperature
Noisy Bubble in
membrane Flick electrode
downward
Poor connection Check connection
Junction not
immersed fully Lower electrode into
solution below junction
Insuffi cient
electrolyte Refi ll electrolyte
Low Slope
(<95%) Contaminated
buffers Replace buffers
Membrane not
clean Clean membrane
Membrane aged Allow more time for
stabilisation, or replace
Electrode
polarised Isolate sample
electrically
Slow
Response Membrane not
clean Clean membrane
Membrane aged Allow more time for
stabilisation, or replace
Incorrect
Reading
after Cal Junction blocked
or unclean Clean junction
Reads pH7
all Buffers Electrical short Check connector
Internal short Replace electrode
Reads
pH4-5 all
Buffers Membrane or
stem cracked Replace electrode
Large
Offset
(>0.5pH) Insuffi cient sleeve
electrolyte Refi ll electrolyte
Junction blocked/
unclean Clean junction
Electrode
polarised Isolate sample
electrically
Parameter Operating Range
pH range 0-14 pH (C glass) 0-12 pH (A glass)
Zero potential point pH 7.0 ± 0.5
Temperature range 0 – 60ºC
Reference type Double Junction Ag/AgCl/sat KCl
Body and sleeve Polypropylene
Overall length 150mm
Barrel diameter 12mm
Cable length 1m standard, longer to order.
Maximum 20m
Connector BNC standard, others on request