46
47
Iron LR
• Press ZERO key. The display will show “-0.0-” when the meter is zeroed and ready for measurement.
• Remove the cuvette.
• Fill another graduated mixing cylinder up to the 25 mL mark
with the sample.
• Add the content of one packet of HI 93746-0 TPTZ reagent,
close the cylinder and shake vigorously for 30 seconds. This is the
reacted sample.
• Fill a cuvette with 10 mL of the reacted sample up to the mark
and replace the cap.
• Insert the sample into the instrument.
• Press TIMER and the display will show the countdown
prior to the measurement or, alternatively, wait for 30
seconds and press READ. When the timer ends the
meter will perform the reading. The instrument displays
concentration in µg/L of iron.
25 ml
10 mL
12
3
6
9
30"
Iron LR
IRON LOW RANGE
SPECIFICATIONS
Range
0 to 400 µg/L
Resolution
1 µg/L
Accuracy
±10 µg/L ±8% of reading
Typical EMC
±1 µg/L
Deviation
Light Source
Tungsten lamp with narrow band interference filter @ 575 nm
Method
Adaptation of the TPTZ Method. The reaction between iron and the reagent causes a
violet tint in the sample.
REQUIRED REAGENTS
Code
Description
Quantity
HI 93746-0
TPTZ Reagent
2 packets
REAGENT SETS
HI 93746-01
Reagents for 50 tests
HI 93746-03
Reagents for 150 tests
For other accessories see page 73.
MEASUREMENT PROCEDURE
• Select the
Iron LR
method using the procedure described in
the
Method Selection
section (see page 12).
• Fill one graduated mixing cylinder up to the 25 mL mark
with deionized water.
• Add the content of one packet of HI 93746-0 TPTZ
reagent, close the cylinder and shake vigorously for 30
seconds. This is the blank.
• Fill a cuvette with 10 mL of the blank up to the mark and
replace the cap.
• Place the cuvette into the holder and close the lid.
12
3
6
9
30"
10 mL
25 ml