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SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

Instruction Manual

www.hannainst.com

Dear Customer,

Thank you for choosing a Hanna Product.

Please read this instruction manual carefully before using

the chemical test kit. It will provide you with the necessary

information for correct use of the kit.

Remove the chemical test kit from the packing material and

examine it carefully to make sure that no damage has

occurred during shipping. If there is any noticeable damage,

notify your Dealer or the nearest Hanna office immediately.

Each kit is supplied with:

• 1 plastic beaker (20 mL);

• 1 color comparator cube;

• Ammonia Reagent 1 for Sea Water, 1 bottle with

dropper (20 mL);

• Nessler Reagent, 1 bottle with dropper (20 mL).

Note: Any damaged or defective item must be returned in

its original packing materials.

ISTR3826R2 04/02 PRINTED IN ITALY

HI 3826

Ammonia

Test Kit

for Sea Water

In nature, the ammonia level in water can vary. Ground

water normally contains ammonia due to bacterial decay of

plants and animals. However, the presence of ammonia in

surface water may be evidence of sanitary pollution due to

waste discharges or natural causes.

The Hanna Ammonia Test Kit determines the ammonia

concentration in water in several easy steps. The kit is

portable and can be used in the field as well as in the

laboratory.

* mg/l is equivalent to ppm (parts per million)

Range 0 to 2.5 mg/L NH

-N

Smallest Increment 0.5 mg/L NH

-N

Analysis Method Colorimetric

Sample Size 10 mL

Number of Tests 25 (average)

Case Dimensions 220x145x55 mm (8.7x5.7x2.1")

Shipping Weight 180 g (6.8 oz.)

SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SIGNIFICANCE AND USESIGNIFICANCE AND USE

SIGNIFICANCE AND USE

CHEMICAL REACTIONCHEMICAL REACTION

CHEMICAL REACTION

The ammonia level in mg/L (or ppm), ammonia as nitrogen

is determined by a colorimetric method.

The Nessler reagent reacts with ammonia, under strong

alkaline conditions, to form a yellow colored complex (see

equation below). An addition of Reagent 1 for Sea Water

inhibits precipitation of calcium and magnesium ions due to

the presence of the alkaline Nessler reagent.

The color intensity of the solution determines the ammonia

concentration

Hgl

+2NH

Ý NH

+ NH

I + 4KI

INSTRUCTIONSINSTRUCTIONS

INSTRUCTIONS

READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT

• Remove the cap from the plastic

vessel. Rinse the plastic vessel

with water sample before filling

it up to the 10 mL mark.

• Add 5 drops of Ammonia Reagent 1 for Sea Water,

replace the cap and mix by carefully swirling the vessel

in tight circles.

• Add 8 drops of Nessler Reagent, replace the cap and

mix by carefully swirling the vessel.

• Remove the cap and transfer the solution into the color

comparator cube. Wait for 5 minutes to allow color to

develop.

REFERENCESREFERENCES

REFERENCES

Standard Methods for the Examination of Water and Waste-

water, 16

Edition, 1985, pages 379-382.

The chemicals contained in this kit may be hazardous if

improperly handled. Read Health and Safety Data Sheet

before performing this test.

HEALTH AND SAFETYHEALTH AND SAFETY

HEALTH AND SAFETY

• Determine which color matches the solution in the cube,

and record the results in mg/L (or ppm) NH

-N.

• It is better to match the color with a white sheet at

about 10 cm behind the comparator.