Hanna-instruments HI 83208-2008 Uživatelský manuál stáhnout pdf (Strana 18)

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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 93736-0 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.

30"

10 mL

25 ml

Iron HR

• Reinsert the cuvette into the instrument.

• Press TIMER and the display will show the countdown

prior to the measurement or, alternatively, wait for 3

minutes and press READ. When the timer ends the

meter will perform the reading.

• The instrument displays concentration in mg/L of iron.

INTERFERENCES

Interference may be caused by:

Molybdate Molybdenum above 50 ppm

Calcium above 10000 ppm (as CaCO

)

Magnesium above 100000 ppm (as CaCO

)

Chloride above 185000 ppm.

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