Thermo Fisher Scientific Ion Selective Electrodes Bromide - Manual (Page 17)

Instruction Manual Bromide Electrode
17
TROUBLESHOOTING HINTS
Symptom Possible Causes
Next Step
Out of Range defective meter check meter with shorting
Reading strap (see meter
instruction manual)
defective electrode check electrode operation
electrodes not unplug electrodes and reset
plugged in properly
reference electrode be sure reference electrode
not filled is filled
air bubble on membrane remove bubble by replacing
electrode
electrodes not in solution put electrodes in solution
Noisy or Unstable defective meter
check meter with
Readings (readings shorting strap
continuously or
rapidly changing) air bubble on membrane
remove bubble by
re-dipping electrode
electrode exposed soak electrode in
to interferences bromide standard
defective electrode replace electrode
ISA not used use recommended ISA
meter or stirrer ground meter or stirrer
not grounded
Drift (reading
samples and standards allow solutions to come
slowly changing at different temperatures to room temperature
one direction) before measurement
electrode exposed check section entitled
to complexing agents
Complexation
incorrect reference use recommended
filling solution filling solution