Hanna-instruments HI 83205-2008 Bedienungsanleitung PDF herunterladen (Seite 22)

42 43

• Add 12 drops of the HI 93704-0 reagent to each

cuvette. Replace the caps and shake gently to mix.

• Place the blank (#1) into the holder and close the lid.

• Press TIMER and the display will show the countdown

prior to zeroing the blank. The display will show “-0.0-”

when the meter is zeroed and ready for measurement.

• Remove the blank.

• Insert the cuvette with the reacted sample (# 2) into the

instrument and close the lid.

• Press READ to start the reading. The instrument displays

concentration in µg/L of hydrazine.

Hydrazine

x 12

# 1

# 2

x 12

# 1

# 2

INTERFERENCES

Interference may be caused by:

Highly colored samples

Highly turbid samples

Aromatic amines

Hydrazine

HYDRAZINE

SPECIFICATIONS

Range 0 to 400 µg/L

Resolution 1 µg/L

Accuracy ±4% of full scale

Typical EMC ±2 µg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 420 nm

Method Adaptation of the

ASTM Manual of Water and Environmental Technology, method

D1385-88,

p-Dimethylaminobenzaldehyde method. The reaction between hydrazine

and the liquid reagent causes a yellow tint in the sample.

REQUIRED REAGENT

Code Description Quantity

HI 93704-0 Liquid Reagent 24 drops

REAGENT SETS

HI 93704-01 Reagents for 100 tests

HI 93704-03 Reagents for 300 tests

For other accessories see page 73.

MEASUREMENT PROCEDURE

• Select the

Hydrazine

method using the procedure de-

scribed in the

Method Selection

section (see page 12).

• Fill one cuvette up to the mark with 10 mL of distilled water.

• Place the cap, insert the cuvette # 1 into the holder and

close the lid.

• Press the Blank function key to start adjusting the light level.

The display will show “Blank Done” when the meter is ready

to take a zero measurement.

• Fill a second cuvette with 10 mL of unreacted sample (up to the

mark) and replace the cap.

10 mL

# 1

10 mL

# 2

# 1

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