DR/2400
Nitrogen, Ammonia
NitrogenAmm_TNT_Low_SAL_Eng_Ody.fm Page 1 of 6
• The ammonia salicylate reagent contains sodium nitroferricyanide. Cyanide solutions are regulated as hazardous wastes by the
Federal RCRA. Collect cyanide solutions for disposal as reactive (D001) waste. Be sure cyanide solutions are stored in a caustic
solution with pH >11 to prevent release of hydrogen cyanide gas. See Section 3 for further information in proper disposal of these
materials.
• Wipe the outside of sample cells before each insertion into the instrument cell holder. Use a damp towel followed by a dry one to
remove fingerprints or other marks.
• A green color will develop if ammonia is present.
Nitrogen, Ammonia
Method 10023
Salicylate Method*
*Adapted from Clin. Chim. Acta, 14, 403 (1966)
Test ‘N Tube™ Vials
LR (0.02 to 2.50 mg/L NH
3
–N)
Scope and Application: For water, wastewater, and seawater
1. Touch
Hach Programs.
Select program
342 N, Ammonia LR TNT.
Touch
Start.
2. Add 2.0 mL of sample
to one AmVer™ Diluent
Reagent Test ‘N Tube™
for Low Range Ammonia
Nitrogen (this is the
prepared sample).
3. Add 2.0 mL of
ammonia-free water to
another AmVer™ Diluent
Reagent Test ‘N Tube
for Low Range Ammonia
Nitrogen (this is the
blank).
4. Add the contents of
one Ammonia Salicylate
Reagent Powder Pillow
to each vial.
Tips and Techniques
Test ‘N Tube Method 10023
Hach ProgramsHach Programs
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