horiba 5002S-10C, Instruction Manual

Page: 63 / 79

51
Troubleshooting
Has the standard
solution expired? If the standard solution has
expired, replace it with a new one.
Use up the standard solution
within approximately 3 months
after opening the bottle. Do not
return the standard solution to its
bottle once it has come out of the
bottle.
(
“Consumables” (page 41))
―
Has conditioning of
the membrane being
performed? Before performing calibration,
soak the electrode with the
membrane in the internal solution
for 15 minutes or longer.
If not, it may cause measurement
errors or decrease in the
response rate during calibration.
(
Note on page 21)
―
Is there any
perforation in the
membrane? Check that when a 1 mL of
sodium hydroxide is added to 50
mL of pure water, the measured
value does not fluctuate by more
than 60 mV.
If the measured value fluctuates
by more than 60 mV, there is a
perforation in the membrane.
Replace the membrane cap.
(
“Membrane cap
replacement” (page 43))
―
Has a pH-adjusting
ISA been added? Perform measurement after
adding a pH-adjusting ISA in both
the standard solution and sample
solution.
(
“Calibration operation”
(page 17))
(
“Measurement operation”
(page 31))
―
Check item Solution View in video