LaMotte AM-21 Water Pollution Detection Outfit - Manual (Page 32)

Overhead Projection Demonstration
Quantity Contents Code
15 mL *Iron Reagent #1 *4450-E
4.5g *Iron Reagent #2 *4451-S
1 Test Tube, 5.0 mL 0230
1 Spoon, 0.05g 0696
1 Demonstration Stage, six cell 1038
1 Spatula 0691
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 a demonstration stage (1038).
3. Add five drops of *Iron Reagent #1 (4450). Stir the mixture with the
spatula (0691).
4. Use the 0.05g spoon (0696) to add one level measure of *Iron Reagent
#2 (4451). Stir the contents of the cell until the powder has completely
dissolved.
5. If iron is present in the water sample, a pink or red color will develop. A
trace of iron will cause a faint pink color to appear. Greater
concentration will produce a full pink color and very high
concentrations will produce a deep red color.
Magnesium Test
See Calcium, Magnesium & Total Hardness (p. 12).
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