Hach DR2400 Manual page 471

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