Hanna Instruments HI 943500A - Manual (Page 24)

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ACCESSORIES
CONDUCTIVITY CALIBRATION SOLUTIONS
HI 7030L 12880 μS/cm calibration solution, 500 mL
HI 7030M 12880 μS/cm calibration solution, 230 mL
HI 7031L 1413 μS/cm calibration solution, 500 mL
HI 7031M 1413 μS/cm calibration solution, 230 mL
HI 7033L 84 μS/cm calibration solution, 500 mL
HI 7033M 84 μS/cm calibration solution, 230 mL
HI 7034L 80000 μS/cm calibration solution, 500 mL
HI 7034M 80000 μS/cm calibration solution, 230 mL
HI 7035L 111800 μS/cm calibration solution, 500mL
HI 7035M 111800 μS/cm calibration solution, 230 mL
HI 7039L 5000 μS/cm calibration solution, 500 mL
HI 7039M 5000 μS/cm calibration solution, 230 mL
OTHER ACCESSORIES
HI 731326 Calibration screwdrivers (20 pcs)
HI 779/P 6-wire cable (100 m/330' roll)
HI 8733 Portable conductivity meter with automatic tem-
perature compensation
PROBE MAINTENANCE & CLEANING
The probe can be compensated for normal contamination by a process of
re-calibration.
It is recommended to remove the probe from its installation regularly for
maintenance.
For HI 7635 only:
Deposits on the conductivity probe can be removed by immersing the probe
in 0.1 N hydrochloric acid for about 30 minutes. Heavier deposits may
demand longer immersion periods.
Rinse the probe thoroughly with water prior to the reinstallation.
On reinstalling, check the seals carefully to ensure that a leak-free
connection is obtained.
For HI 7638 only:
Rinse the probe with tap water. If a more thorough cleaning is desired,
unscrew the plastic sleeve and clean the sensors with a nonabrasive cloth
or alcohol.
After cleaning the probe, re-calibrate the instrument. If the instrument
will not calibrate with a clean probe, you must replace the probe.
Note: Always re-calibrate the meter when attaching a new probe.