13
• 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.
• Fill a graduated beaker with 50 mL of
sample.
• Add 0.5 mL of
HI 93719A-0
Magnesium
indicator solution, then swirl to mix.
• In the same beaker add 0.5 mL of
HI
93719B-0
Alkali solution for
Magnesium, then swirl to mix.
• Fill two cuvettes with 10 mL of sample
each.
• Add 1 drop of
HI 93719C-0
EDTA solution
to one cuvette, replace the cap and swirl
the solution. This is the blank.
• Add 1 drop of
HI 93719D-0
EGTA solution
to the second cuvette, replace the cap
and swirl the solution. This is the sample.
• Place the blank 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 measurement.