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54
METHOD PROCEDURES
54
54
HARDNESS
, CALCIUM
• Add 1 drop of
HI93720C-0
Calcium Hardness Reagent C to one
cuvette (#1).
• Replace the plastic stopper and the cap. Invert the cuvette several
times to mix. This is the blank.
• Insert the blank (#1) into the holder and close the lid.
• Press
Zero
. The display will show “-0.0-” when the meter is zeroed and ready for measurement.
• Remove the blank (#1) and insert the second cuvette (#2) into
the holder.
• Press
Read
to start the reading. The instrument displays concentration in
mg/L
of
calcium
carbonate (CaCO
3
).
×1
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# 2