Stablcal Calibration Procedure - Hach 2100AN IS User Manual

StablCal calibration procedure

1. Push CAL/Zero. 2. Get the < 0.1 NTU
vial. Clean the vial with
The CAL/Zero light
a soft, lint-free cloth to
turns on, and the mode
remove water spots and
display shows "00". The
fingerprints. Do not
NTU value of the
invert the vial.
dilution water that was
used in the previous
calibration is shown on
the display.
7. Remove the vial 8. Do steps 5–10 for
from the sample cell the other StablCal vials
holder. (from lowest to highest
NTU standard).
The mode display
shows "00" after the
last vial is measured.
14 English
3. Apply a small bead 4. Use the oiling cloth
of silicone oil from the to apply the oil equally
top to the bottom of the to the surface of the
vial. vial. Remove the
excess oil. Make sure
that the vial is almost
dry.
9. Push CAL/Zero.
The instrument saves
the new calibration data
and goes back to
Measurement mode.
5. Put the vial in the 6. Push ENTER.
sample cell holder with
The instrument display
the triangle on the vial
counts down, then
aligned with the
measures the standard.
reference mark on the
The next expected
sample cell holder.
standard (e.g., 20.00) is
Close the cover.
shown. The mode
display shows "01".