Hanna-instruments HI 83200 Manual de usuario descargar pdf (Pagina 32)

62 63

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

each cuvette. Replace the caps and shake

gently to mix (about 30 seconds).

• 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

µµ

µg/L of hydrazine.

Hydrazine

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 reading at 25 °C

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 124.

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.

# 1 # 2

# 1

# 2

10 mL

# 1

10 mL

# 2

# 1

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 64 65

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