LaMotte NITROGEN IN SOIL User Manual

NI TRO GEN DI OX IDE IN AIR TEST KIT

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WARNING! This set contains chemicals

that may be harmful if misused. Read

cautions on individual containers

carefully. Not to be used by children

except under adult supervision

CODE 7690

QUANTITY CONTENTS CODE

2 x 120 mL *Nitrogen Dioxide #1 Absorbing Solution *7684-J
30 mL *Nitrogen Dioxide Reagent #2 *7685-G
10 g Nitrogen Dioxide Reagent #3 Powder 7688-D
2 Test Tubes, 10 mL, glass, w/caps 0822
1 Spoon, 0.05g, plastic 0696
1 Pipet, dropping, plastic 0352
1 Nitrogen Dioxide in Air Comparator 7689
1 Tubing 23609
1 Pipet 30410
1 Needle 27336-01

*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these
reagents go to www.lamotte.com. To obtain a printed copy, contact LaMotte by
e-mail, phone or fax.

To order individual reagents or test kit components, use the specified code
number.

The sampling period specified in the directions corresponds to
concentrations which may be encountered in ambient air conditions.
High concentrations of pollutants in the atmosphere will require shorter
sampling periods, while low concentrations will require longer sampling
periods.

USE OF THE OCTET COM PARA TOR

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The Octet Comparator contains eight permanent
color standards. A test sample is inserted into the
openings in the top of the comparator. The sample
can then be compared to four color standards at
once, and the value read off the comparator. For
optimum color comparison, the comparator should
be positioned between the operator and a light
source, so that the light enters through the special
light-diffusing screen in the back of the comparator.
Avoid viewing the comparator against direct sunlight
or an irregularly lighted background.

USE OF THE ADAPTER ASSEMBLY

This test kit includes an adapter for restricting the flow of air through the
impinging apparatus. The adapter assembly consists of a 27 gauge
hypodermic needle (27336-01) which is fitted into a small plastic holder
(30410). A piece of plastic tubing (23609) is attached to the plastic
holder. By joining one end of the tubing to the intake portion of the
impinging apparatus, the flow of air is restricted to 0.2 Lpm. To sample the
test atmosphere at this rate for nitrogen dioxide, use the following
procedure:

1. Attach adapter to intake of impinging apparatus.

2. Unscrew knob of flowmeter (counterclockwise - 6 complete turns

from closed position of flowmeter).

3. Turn switch to “ON” position. Follow recommended operating
procedure for nitrogen dioxide test.

NOTE: The sampling period should not exceed 20 minutes for a
single determination of nitrogen dioxide when the adapter is in place
as damage might result to the pumping mechanism.