Hach DR2400 - Page 471

DR/2400
Nitrogen, Ammonia
NitrogenAmm_PP_Other_SAL_Eng_Ody.fm Page 1 of 4
Nitrogen, Ammonia
Method 8155
Salicylate Method*
*Adapted from Clin. Chim. Acta., 14, 403 (1966)
• A green color will develop if ammonia nitrogen is present.
Powder Pillows
(0.01 to 0.50 mg/L NH
3
–N)
Scope and Application: For water, wastewater, and seawater
1. Touch
Hach Programs.
Select program
385 N, Ammonia, Salic.
Touch Start.
2. Fill a round sample
cell to the 10-mL mark
with sample.
3. Fill another round
sample cell to the 10-mL
mark with deionized
water (this is the blank).
4. Add the contents of
one Ammonia Salicylate
Powder Pillow to each
cell. Stopper and shake to
dissolve the powder.
5. Touch the timer icon.
Touch
OK.
A three-minute reaction
period will begin.
6. When the timer
beeps, add the contents
of one Ammonia
Cyanurate Reagent
Powder Pillow to each
cell. Stopper and shake to
dissolve the reagent.
7. Touch the timer icon.
Touch
OK.
A 15-minute reaction
period will begin.
A green color will develop
if ammonia-nitrogen
is present.
8. When the timer
beeps, place the blank
into the cell holder.
Tips and Techniques
Powder Pillows Method 8155
Hach ProgramsHach Programs
FILL LINE
10 mL
10 mL