16
Use the validation procedure to ensure that the instrument is properly calibrated.
Warning:
Do not validate the instrument with any standard solutions other than the Hanna Instruments
CAL Check
TM
Standards, otherwise erroneous results will be obtained.
•
Turn the meter on by pressing
ON/OFF
.
• When the beeper sounds briefly and the LCD displays dashes, the meter is ready.
The blinking
“ZERO”
indicates that the instrument needs to be zeroed first.
• Place the
CAL Check
TM
Standard
HI96727‑11
Cuvette A into the cuvette holder and ensure
that the notch on the cap is positioned securely into the groove.
• The instrument directly displays concentration in color units of the true color on the LCD.
VALID
ATION PROCEDURE
