15
VALIDATION PROCEDURE
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
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.
• Place the
CAL CHECK
TM
Standard
HI 96731-11
Cuvette A into the cuvette
holder and ensure that the notch on the
cap is positioned securely into the groove.
• Press
ZERO/CFM
and the lamp, cuvette
and detector icons will appear on the
display, depending on the measurement
phase.
• After a few seconds, the display will
show
“-0.0-”
. The meter is now zeroed
and ready for validation.
INTERFERENCES
Aluminum above
6 mg/L
Cadmium above
0.5 mg/L
Copper above
5 mg/L
Iron above
7 mg/L
Manganese above 5 mg/L
Nickel above
5 mg/L
