Hanna Instruments HI 83206-2008 User Manual

Page 26

SPECIFICATIONS

Range

0.00 to 0.35 mg/L

Resolution

0.01 mg/L

Accuracy

±0.02 mg/L ±4% of reading

Typical EMC

±0.01 mg/L

Deviation
Light Source

Tungsten lamp with narrow band interference filter @ 525 nm

Method

Adaptation of the

EPA Diazotization method 354.1. The reaction between nitrite and

the reagent causes a pink tint in the sample.

REQUIRED REAGENTS

Code

Description

Quantity

HI 93707-0

Powder reagent

1 packet

REAGENT SETS

HI 93707-01 Reagents for 100 tests
HI 93707-03 Reagents for 300 tests
For other accessories see page 73.

MEASUREMENT PROCEDURE

• Select the

Nitrite LR method using the procedure described

in the

Method Selection section (see page 12).

• Fill the cuvette up to the mark 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.

• Remove the cuvette.

• Add the content of one packet of HI 93707-0 reagent. Replace

the cap and shake gently for about 15 seconds.

Nitrite LR

NITRITE LOW RANGE

10 mL

Nitrite HR

• Reinsert the cuvette into the instrument.

• Press TIMER and the display will show the countdown prior

to the measurement or, alternatively, wait for 10 minutes

and press READ. When the timer ends the meter will
perform the reading. The instrument displays concentration

in mg/L of nitrite.

• Press the or to access the second level of functions.
• Press the Chem Frm functional key to convert the result in mg/L of nitrogen-nitrite (NO

–

-N) and sodium

nitrite (NaNO

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