Hanna Instruments pH 211R - Manual (Page 9)

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ACCESSORIES
pH CALIBRATION SOLUTIONS
HI 70004P pH 4.01 buffer solution, 20 mL sachet, 25 pcs
HI 70007P pH 7.01 buffer solution, 20 mL sachet, 25 pcs
HI 70010P pH 10.01 buffer solution, 20 mL sachet, 25 pcs
HI 7004L pH 4.01 buffer solution, 500 mL bottle
HI 7006L pH 6.86 buffer solution, 500 mL bottle
HI 7007L pH 7.01 buffer solution, 500 mL bottle
HI 7009L pH 9.18 buffer solution, 500 mL bottle
HI 7010L pH 10.01 buffer solution, 500 mL bottle
HI 8004L pH 4.01 buffer solution in FDA bottle, 500 mL
HI 8006L pH 6.86 buffer solution in FDA bottle, 500 mL
HI 8007L pH 7.01 buffer solution in FDA bottle, 500 mL
HI 8009L pH 9.18 buffer solution in FDA bottle, 500 mL
HI 8010L pH 10.01 buffer solution in FDA bottle, 500 mL
ELECTRODE MAINTENANCE SOLUTIONS
HI 70300L Storage solution, 500 mL bottle
HI 80300L Storage solution in FDA bottle, 500 mL
HI 70000P Rinsing solution, 20 mL sachet, 25 pcs
HI 7061L General cleaning solution, 500 mL bottle
HI 8061L General cleaning solution in FDA bottle, 500 mL
HI 7073L Protein cleaning solution, 500 mL bottle
HI 8073L Protein cleaning solution in FDA bottle, 500 mL
HI 7074L Inorganic cleaning solution, 500 mL bottle
HI 7077L Oil & Fat cleaning solution, 500 mL bottle
HI 8077L Oil & Fat cleaning solution in FDA bottle, 500 mL
HI 7071
3.5M KCl+AgCl electrolyte solution, 4 x 50 mL bottle,
for single junction electrodes
HI 8071 3.5M KCl+AgCl electrolyte solution in FDA bottle, 4 x 50
mL, for single junction electrodes
HI 7072 1M KNO
3
electrolyte solution, 4 x 50 mL bottle
HI 8072 1M KNO
3
electrolyte solution in FDA bottle, 4 x 50 mL
HI 7082 3.5M KCl electrolyte solution 4 x 50 mL bottle, for
double junction electrodes
HI 8082 3.5M KCl electrolyte solution in FDA bottle, 4 x 50 mL,
for double junction electrodes
TROUBLESHOOTING GUIDE
Symptoms Problem Solution
The meter is slow in
responding or gives
faulty readings
The meter does not ac-
cept the 2
nd buffer
solution for calibration
The reading drifts
Display shows:
Display shows:
Display shows:
Display shows:
"WRONG
"
and
"WRONG "
Display shows:
"WRONG
"
and
"WRONG "
The meter does not
work with the tempera-
ture probe
The meter fails to cali-
brate or gives faulty
readings
The electrode is not work-
ing or the reference
junction is clogged
Out of order pH electrode
Defective pH electrode
Out of range pH scale
Out of range tempera-
ture scale
Out of range mV scale
Erroneous buffer solution
used for offset calibra-
tion
Defective electrode
Erroneous buffer solution
used for slope calibration
Defective electrode
Out of order temperature
probe
Out of order pH electrode
Leave the electrode in a stor-
age solution after cleaning
the junction. If problem per-
sists, replace the electrode
Follow the cleaning proce-
dure. If this doesn't work
replace the electrode
Replace the electrode
a) Recalibrate
b) Make sure the pH sample
is in the 0 to 14 range
c) Check the electrolyte level
and the general state of
the pH electrode
Make sure the temperature
is in the 0 to 100°C range
and the temperature probe is
plugged in
Electrode not connected
Make sure the buffer setting
is correct and the solution is
fresh. Replace the buffer if
necessary
Replace the electrode
Make sure the buffer setting
is correct and the solution is
fresh. Replace the buffer if
necessary
Replace the electrode
Replace the probe
Replace the electrode