Hach-Lange HQD - Gel filled ORP_Redox electrode MTC - Manual (Page 4)

4 DOC272.53.80033
Note: Procedures also apply for rugged model probes.
1. Connect the
electrode to the
meter.
2. Add fresh
ORP/Redox
standard to beaker
or appropriate
container.
3. Select
Calibrate. The
display will show the
required
ORP/Redox
standard solution.
4. Rinse the
electrode with
deionized water, blot
dry and place it in
the standard
solution. Make sure
that the sample
level is above the
reference junction.
5. Push Read. Stir
gently. The display
will show
Stabilizing... and a
progress bar as the
probe stabilizes in
the standard.
6. The display will
show the standard
solution value and
the mV offset when
the reading is
stable. Select Done
to view the
calibration
summary.
7. The display will
show the calibration
summary. Select
Store to accept the
calibration and
return to the
measurement
mode.