11
• Using the HI 93703-0 bottle containing
the ZERO FTU Standard (or turbidity-free
water), fill the measurement cuvette and
secure the cap.
Note: To minimize error caused by the cu-
vette, it is recommended to use the
same cuvette for calibration and mea-
surement.
• Insert cuvette into the holder.
• Press CAL. An intermittent “SIP” indicates that the instrument is
being calibrated.
• After approximately 1 minute, the instru-
ment will ask for the HI 93703-10
standard solution @ 10 FTU by display-
ing “10.0”.
• Refill the cuvette with the HI 93703-10
AMCO-AEPA-1 standard at 10 FTU and
place it into the measurement cell
• Press CAL again. After approximately 1 minute the LCD will display
"----".
The instrument is now calibrated and ready for use.
TIPS TO OBTAIN ACCURATE CALIBRATION
• All glassware that comes into contact with standards should be
kept clean. Wash with HI 93703-50 cleaning solution and rinse
with HI 93703-0 or turbidity free water.
• Rinse the cuvette twice with 5 mL of the liquid to be tested. This
removes any previous liquid and any dust or foreign matter that
may be present. Gently pour the liquid down the side of the vial
to reduce air bubbles (no mixing is required when
HI 93703-0 and HI 93703-10 AMCO-AEPA-1 standards are
used).
