LaMotte 1200-NA COLORIMETER - Manual

1200 COLORIMETER
NITRATE NITROGEN
MODEL 1200-NA · CODE 3677-01
QUANTITY CONTENTS CODE
2 x 120 mL *Mixed Acid Reagent *V-6278-J
10 g *Nitrate Reducing Reagent *V-6279-D
1 Spoon, 0.1 g, plastic 0699
1 Graduated Cylinder 0416
1 Colorimeter Tubes, w/caps 0290-6
1 Water Sample Collecting Bottle 0688
1 1200 Colorimeter for Nitrate Nitrogen 26734
*WARNING: Reagents marked with a * are considered to be potential health hazards.
To view or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD
or www.lamotte.com. To obtain a printed copy, contact LaMotte by email, phone or fax.
To order individual reagents or test components, use the specified code number.
NITRATE - NITROGEN INTRODUCTION
Nitrogen is essential for plant growth, but the presence of excessive amounts in water
supplies presents a major pollution problem. Nitrogen compounds may enter water as
nitrates or be converted to nitrates from agricultural fertilizers, sewage, industrial and
packing house wastes, drainage from livestock feeding areas, farm manures and legumes.
Nitrates in large amounts can cause “blue babies” (methemoglobinemia) in infants less
than six months of age. Nitrate concentration is an important factor to be considered in
livestock products, where, in addition to causing methemoglobinemia, it is responsible
for many other problems. Nitrates in conjunction with phosphate stimulate the growth
of algae with all of the related difficulties associated with excessive algae growth.
U.S. Public Health Service Drinking Water Standards state that 10 ppm nitrate nitrogen
should not be exceeded. To the sanitary and industrial engineer, concentrations of less
than 1 ppm are acceptable.
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