Thermo Fisher Scientific Ion Selective Electrodes Silver - Manual (Page 24)

Silver/Silver Sulfide Electrode Instruction Manual
24
TROUBLESHOOTING HINTS
Symptom
Possible Causes Next Step
Out of Range defective meter check meter with
Reading shorting strap (see meter
instruction manual)
defective electrode check electrode operation
electrodes not unplug electrodes
plugged in properly and reset
reference electrode be sure reference
not filled electrode is filled
air bubble on remove bubble by
membrane re-dipping electrode
electrodes not put electrodes
in solution in solution
Noisy or Unstable
defective meter check meter with
Readings (readings shorting strap
continuously or
rapidly changing) air bubble on remove bubble by
membrane re-dipping electrode
ISA not used use recommended ISA
meter or stirrer ground meter or stirrer
not grounded
defective electrode replace electrode
electrode exposed soak electrode in
to interference silver or sulfide standards
Drift (reading
samples and standards allow solutions to
slowly changing at different temperatures come to room temperature
in one direction) before measurement
electrode exposed check section entitled
to complexing agents
Complexation
incorrect reference use recommended
filling solution filling solution