LaMotte AM-21 Water Pollution Detection Outfit - Manual (Page 34)

Field Test Method
Quantity Contents Code
60 mL *Mixed Acid Reagent *V-6278-H
5g *Nitrate Reducing Reagent *V-6279-C
1 Spoon, 0.1g 0699
2 Test Tube, 2.5 and 5 mL 0820
1 Nitrate-N Comparator, 2 and 10 ppm 7493
1 Pipet 0352
1 Dispenser Cap 0692
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.
NOTE: Place dispenser cap (0692) on *Mixed Acid Reagent (V-6278-H). Save this cap
for refill reagents.
Procedure
1. Fill a test tube (0820) to the 2.5 mL line with the sample water.
2. Add *Mixed Acid (V-6278) until the tube is filled to the 5.0 mL line.
Cap and mix. Wait two minutes.
3. Use the 0.1g spoon (0699) to add one level measure of *Nitrate
Reducing Reagent (V-6279) to the mixture in the test tube. Invert the
test tube 50-60 times in one minute. Wait 10 minutes.
4. A very light pink color indicates a trace of Nitrate Nitrogen present in
the sample. High concentrations of Nitrates will produce a deep magenta
color. Insert the tube into the Nitrate-N Comparator (7493). Match
sample to a color standard.
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