LaMotte AM-21 Water Pollution Detection Outfit - Manual (Page 11)

Overhead Projection Demonstration
Quantity Contents Code
30 mL Ammonia Nitrogen Reagent #1 4797WT-G
30 mL *Ammonia Nitrogen Reagent #2 *4798WT-G
1 Test Tube, 5.0 mL, w/cap 0230
1 Demonstration Stage, six cell 1038-P
1 Spatula 6091
WARNING: Reagents marked with a * are considered to be potential health hazards.
To view or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD
or www.lamotte.com. To obtain a printed copy, contact LaMotte by email, phone or fax.
Procedure
1. Place the demonstration stage (1038) on the overhead projector and
turn on the projector light.
2. Fill test tube (0230) to the 5 mL line with sample water and transfer to a
cell on the demonstration stage (1038). (As a control, measure 5.0 mL of
sample water and add this to a second cell on the stage. Do not add any
reagents to the control sample.)
3. Add two drops of Ammonia Nitrogen Reagent #1 (4797) and gently stir
with a clean spatula (6091).
4. Add eight drops of *Ammonia Nitrogen Reagent #2 (4798). Mix by
stirring with the spatula.
5. If ammonia is present, a yellow color will form. High concentrations of
ammonia will produce a full yellow color. Lower concentrations will
produce varying shades of yellow and a faint yellow tint will indicate the
presence of a trace quantity of ammonia.
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