16
The measurement procedure requires the instrument to be zeroed prior to sample measurement. The
instrument is “zeroed” using an unreacted sample to compensate for the sample turbidity or color.
The reagents are then added and the reacted sample is measured.
• Turn the meter on by pressing
ON/OFF
. The display briefly shows all tags on.
• 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.
• Pay attention to the selected range. To change the range, simply press
RANGE/GLP
.
Note: If P2 is used a sample dilution is required (see below).
• Fill the cuvette with 10 mL of unreacted sample, up to the mark, and replace the cap.
• Add six drops of
HI93750A‑0
, replace the cap and swirl the solution. (Do not shake).
HI93750A-0
6
• Place the cuvette 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.
MEASUREMENT PROCEDURE