LaMotte COD3 Plus, Operator'S Manual

Page: 39 / 119

COD3 Plus Colorimeter 10.16
Ammonia Nitrogen
, High Range
AMMONIA NITROGEN - HIGH RANGE
NESSLERIZATION METHOD • CODE 3642-SC
QUANTITY CONTENTS CODE
30 mL Ammonia Nitrogen Reagent #1 V-4797-G
2 x 30 mL *Ammonia Nitrogen Reagent #2 *V-4798-G
1 Pipet, 1 mL, plastic 0354
*WARNING:
Reagents marked with an * are considered to be potential health hazards.
To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the
contents list or in the test procedures. Omit any letter that follows or precedes the
four digit code number. For example, if the code is 4450WT-H, search 4450. To obtain
a printed copy, contact LaMotte by email, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel:
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
Ammonia nitrogen is present in various concentrations in many surface and ground
water supplies. Any sudden change in the concentration of ammonia nitrogen in a
water supply is cause for suspicion. A product of microbiological activity, ammonia
nitrogen is sometimes accepted as chemical evidence of pollution when encountered
in natural waters.
Ammonia is rapidly oxidized in natural water systems by special bacterial groups that
produce nitrite and nitrate. This oxidation requires that dissolved oxygen be available
in the water. Ammonia is an additional source of nitrogen as a nutrient which may
contribute to the expanded growth of undesirable algae and other forms of plant
growth that overload the natural system and cause pollution.
Testing