TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
TEST INSTRUCTIONS - Geotech Environmental Equipment
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NITRITE<br />
DIAZOTIZATION CODE 3694-SC<br />
QUANTITY CONTENTS CODE<br />
50 *Nitrite Spectrophotometric Grade Tablets *3886A-H<br />
1 Tablet Crusher 0175<br />
*WARNING: Reagents marked with an * are considered hazardous substances. To<br />
view or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD<br />
or our web site. To obtain a printed copy, contact us by e-mail, phone or fax.<br />
Nitrite represents an intermediate stage of the nitrogen cycle, usually resulting<br />
from the bacterial decomposition of compounds containing organic nitrogen.<br />
Under aerobic conditions bacteria oxidize ammonia to nitrites; and under<br />
anaerobic conditions, bacteria reduce nitrates to nitrites. Nitrites are often used<br />
as food preservatives. The nitrite concentration of drinking water rarely<br />
exceeds 0.1 ppm.<br />
APPLICATION: Drinking, surface, and saline waters; domestic and industrial<br />
waters.<br />
RANGE: 0.00–1.25 ppm Nitrite<br />
METHOD: The compound formed by diazotization of sulfanilamide and<br />
nitrite is coupled with N-(1-naphthyl)-ethylenediamine to<br />
produce a reddish purple color in proportion to the nitrite<br />
SAMPLE<br />
HANDLING &<br />
PRESERVATION:<br />
concentration.<br />
Samples should be analyzed as soon as possible. They may be<br />
stored for 24 to 48 hours at 4°C.<br />
INTERFERENCES: There are few known interfering substances at<br />
concentrations at less than 1000 times the nitrite-nitrogen<br />
concentration; however, the presence of strong oxidizing<br />
agents or reductants may readily affect nitrite<br />
concentrations.<br />
Smart2 <strong>TEST</strong> PROCEDURES 1.07 Nitrite-TesTab 1/2