Hanna Instruments HI 83212 - Manual (Page 16)

30 31 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 50.
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 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
Copper LR
• Remove the cuvette.
• Add the content of one packet of HI 93747-0 Bicinchoninate.
Replace the cap and shake gently for about 15 seconds.
• Reinsert the cuvette into the instrument.
• Press TIMER and the display will show the countdown prior to
the measurement or, alternatively, wait for 45 seconds and press
READ. When the timer ends the meter will perform the reading.
• The instrument displays the results in mg/L of copper.
INTERFERENCES
Interference may be caused by:
Silver
Cyanide
For samples overcoming buffering capacity of reagent (around pH 6.8), pH should be adjusted between 6
and 8.