Hanna Instruments HI 83200C User Manual

Page 47

SPECIFICATIONS

Range

0.00 to 1.15 mg/L

Resolution

0.01 mg/L

Accuracy

±0.06 mg/L ±4% of reading at 25 °C

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 128.

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 the

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

Nitrite HR

• Add the content of one packet of HI 93708-0 reagent.

Replace the cap and shake gently until completely dissolved.

• 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 ▲ or ▼ to access the second level functions.
• Press the

Chem Frm key to convert the result in mg/L of nitrogen-nitrite (NO

¯-N) and sodium nitrite

(NaNO

• Press ▲ or ▼ to return to the measurement screen.

10 mL