87
• Place the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
• Press ZERO and "SIP" will blink on the display.
• Wait for a few seconds and the display
will show "-0.0-". Now the meter is
zeroed and ready for measurement.
• Remove the cuvet.
• Fill another graduated mixing cylin-
der up to the 25 mL mark with the
sample.
• Add the content of one packet
of HI 93746 TPTZ reagent,
close the cylinder and shake
vigorously for 30 seconds. This
is the reacted sample.
• Fill a cuvet with 10 mL of the reacted
sample up to the mark and replace the
cap.
25 ml
10 mL
12
3
6
9
30"
Iron LR
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