20
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.
Note
: The validation is performed only for the selected parameter. For full validation of the
instrument, the following procedure must be performed for each parameter.
• 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
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.
• Remove the cuvette.
• Place the corresponding
CAL CHECK
TM
Standard Cuvette B into the cuvette holder
and ensure that the notch on the cap is
positioned securely into the groove.