Hanna Instruments HI 9811-0 User Manual

Page 7

PROBE MAINTENANCE

PERIODIC MAINTENANCE

Inspect the probe and the cable. The cable used for the connection to
the meter must be intact and there must be no points of broken
insulation on the cable or cracks on the probe stem or bulb.
Connector must be perfectly clean and dry. If any scratches or cracks
are present, replace the electrode. Rinse off any salt deposits with
water.

CLEANING PROCEDURE

For better accuracy in measurements and to ensure a good perfor-
mance of the probe, a frequent cleaning is recommended.
For this purpose, soak it in Hanna HI 700661 Cleaning Solution for
5 minutes.
Note: For particular dirty (as for example protein, oil or grease) see

the "Accessories" section for Hanna specific solutions.

Note: After cleaning the probe, it is recommended to recalibrate the

meter. If it is not possible to calibrate, the probe has to be
replaced with a new one.

Note: For field applications, it is always recommended to keep a

spare probe handy. When anomalies are not resolved with
simple maintenance, change the probe and recalibrate the
meter.

ACCESSORIES

PROBES

HI 1285-0

Combination, amplified pH/EC/TDS probe with built-in
temperature sensor, 8-pin DIN connector and 1 m
(3.3') cable

HI 1285-5

Combination, amplified pH/EC/TDS/temperature probe
with built-in temperature sensor, 8-pin DIN connector
and 1 m (3.3') cable

pH BUFFER SOLUTIONS

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

CONDUCTIVITY & TDS CALIBRATION SOLUTIONS

HI 7031L

1413 µS/cm solution, 500 mL bottle

HI 7032L

1382 ppm (mg/L) solution, 500 mL bottle