Section 5 Calibration; Calibration Notes; Lbod Water-Saturated Air (100%) Calibration Procedure - Hach LBOD101 User Manual

Section 5 Calibration

The procedure that follows is applicable to meters that can connect to Intellical LBOD probes. Refer
to the applicable meter documentation for meter operation and probe-specific settings.

5.1 Calibration notes

Read the notes that follow before calibration.
• Measure samples as soon as possible after collection.
• Use the single display mode for calibration when more than one probe is connected to the meter (if
applicable).
• Calibrate the probes and verify the calibration regularly for best results. Use the meter to set
calibration reminders.
• The calibration data is stored in the probe. When a calibrated probe is connected to a different
meter with the same calibration options, a new calibration is not necessary.
• Air bubbles below the sensor when in solution can cause a slow response or error in the
calibration. Make sure to remove air bubbles during calibration.
• The meter uses the slope value shown at the end of the calibration to monitor the condition of the
sensor cap.

5.2 LBOD water-saturated air (100%) calibration procedure

1. Fill a BOD bottle
approximately ¾ full
with water.
5. Put the probe in
the bottle. Wait
approximately
10 minutes for the
contents to adjust to
ambient
temperature.
6 English
2. Put a stopper on
the bottle and shake
for 30 seconds.
6. Go to the
calibrate menu.
Select the probe, if
applicable.
3. Rinse the probe
with deionized water.
Dry the probe with a
lint-free cloth.
7. Read the
dissolved oxygen
value. The display
shows 100% when
the reading is stable.
4. Carefully dry the
LBOD sensor cap
with a non-abrasive
cloth.
8. Save the
calibration.