Hanna Instruments HI 83200C User Manual

Page 33

Hydrazine

HYDRAZINE

SPECIFICATIONS

Range

0 to 400

g/L

Resolution

g/L

Accuracy

±4% of full scale reading at 25 °C

Typical EMC

±2

g/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 128.

MEASUREMENT PROCEDURE

• Select the

Hydrazine method using the procedure described 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 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.

Hardness Mg

• Press ▲ or ▼ to access the second level functions.
• Press the

Chem Frm key to convert the result in mg/L of Magnesium (Mg).

• Press the

Unit key to change the current measurement unit. The results can be converted to French

degrees (°f), German degrees (°dH) and English degrees (°E).

• Press ▲ or ▼ to return to the measurement screen.

Note: This test will detect any magnesium contamination in the beakers, measuring syringes or sample
cells. To test cleanliness, repeat the test multiple times until you obtain consistent results.

SAMPLE DILUTION

This meter is designed to determine hardness typically found in water purification systems. In order to
measure samples with high hardness, follow dilution procedure explained on page 61 (Ca Hardness).

INTERFERENCES

Interference may be caused by excessive amounts of heavy metals.

10 mL

# 1

10 mL

# 2

# 1