Hanna Instruments HI 83208-2008 User Manual

Page 26

Nitrate

SPECIFICATIONS

Range

0.0 to 30.0 mg/L

Resolution

0.1 mg/L

Accuracy

±0.5 mg/L ±10% of reading

Typical EMC

±0.1 mg/L

Deviation
Light Source

Tungsten lamp with narrow band interference filter @ 525 nm

Method

Adaptation of the cadmium reduction method. The reaction between nitrate and the
reagent causes an amber tint in the sample.

REQUIRED REAGENTS

Code

Description

Quantity

HI 93728-0

Powder reagent 1 packet

REAGENT SETS

HI 93728-01 Reagents for 100 tests
HI 93728-03 Reagents for 300 tests
For other accessories see page 73.

MEASUREMENT PROCEDURE

• Select the

Nitrate method using the procedure described in

the

Method Selection section (see page 12).

• Using the pipette, fill the cuvette with 6 ml of sample, up

to half of its height, 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.

• Remove the cuvette and add the content of one packet of

HI 93728-0 reagent.

6 mL

NITRATE

INTERFERENCES

Interference may be caused by:
Co

must not be present

above 32 mg/L

above 1000 mg/L (as CaCO

)

above 20 mg/L

–

above 8000 mg/L

above 20 mg/L

above 40 mg/L

above 15 mg/L

–

above 20 mg/L

above 10 mg/L

above 500 mg/L

above 400 mg/L

above 25 mg/L

above 60 mg/L

above 5000 mg/L

above 20 mg/L

above 30 mg/L

Nickel LR