Nitrogen, Ammonia Salicylate Method - Hach DR/850 Procedures Manual

NITROGEN, AMMONIA
Salicylate Method
1.
Enter the stored
program number
for ammonia nitrogen
(NH -N).
3
Press:
PRGM
The display will show:
PRGM ?
5.
Add the contents of
one Ammonia Salicylate
Reagent Powder Pillow
to each sample cell. Cap
both cells and shake
to dissolve.
* Adapted from Clin. Chim. Acta., 14 403 (1966)
(0 to 0.50 mg/L NH
*
2.
Press:
64 ENTER
The display will show
mg/L, NH3-N and the
ZERO icon.
Note: For alternate forms
(NH , NH ), press the
3 4
CONC key.
6.
Press:
TIMER ENTER
A three-minute reaction
period will begin.
-N)
For water, wastewater, seawater
3
3.
Fill a sample cell
with 10 mL of deionized
water (the blank).
7.
After the timer beeps
add the contents of one
Ammonia Cyanurate
Reagent Powder Pillow
to each sample cell. Cap
the cells and shake to
dissolve the reagent.
Note: A green color will
develop if ammonia
nitrogen is present.
259
Method 8155
4.
Fill a second sample
cell with 10 mL of
the sample.
8.
The display will
show: 15:00 TIMER 2
Press:
ENTER
A 15-minute reaction
period will begin.