Hanna-instruments HI 83205-2008 Bedienungsanleitung PDF herunterladen (Seite 12)

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Bromine

BROMINE

SPECIFICATIONS

Range 0.00 to 8.00 mg/L

Resolution 0.01 mg/L

Accuracy ±0.08 mg/L ±3% of reading

Typical EMC ±0.01 mg/L

Deviation

Light Source Tungsten lamp with narrow band interference filter @ 525 nm

Method Adaptation of the

Standard Methods for the Examination of Water and Wastewater,

edition

, DPD method. The reaction between bromine and the reagent causes a

pink tint in the sample.

REQUIRED REAGENTS

Code Description Quantity

HI 93716-0 DPD Reagent 1 packet

REAGENT SETS

HI 93716-01 Reagents for 100 tests

HI 93716-03 Reagents for 300 tests

For other accessories see page 73.

MEASUREMENT PROCEDURE

• Select the

Bromine

method using the procedure described in the

Method Selection

section (see page 12).

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

mark) and replace the cap.

• Place the cuvette into the holder and close the lid.

• Press ZERO key. The display will show “-0.0-” when the meter

is zeroed and ready for measurement.

10 mL

Ammonia LR

• Remove the cuvette.

• Add 4 drops of HI 93700A-0 First reagent (6 drops for seawater

analysis). Replace the cap and mix the solution.

• Add 4 drops of HI 93700B-0 Second reagent (10 drops for seawater

analysis). Replace the cap and mix the solution.

• 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 30 seconds and

press READ. When the timer ends the meter will perform the reading.

The instrument displays the results in mg/L of ammonia nitrogen

(NH

-N).

• Press the  or  to access the second level of functions.

• Press the Chem Frm functional key to convert the result in mg/L of ammonia (NH

) and ammonium (NH

• Press the  or  to go back to the measurement screen.

INTERFERENCES

Interference may be caused by: acetone, alcohols, aldehydes, glycine, hardness above 1 g/L, iron, organic

chloramines, sulfide, various aliphatic and aromatic amines.

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