LaMotte AM-21 Water Pollution Detection Outfit - Manual (Page 49)

Overhead Projection Demonstration
Quantity Contents Code
60 mL *TDS Reagent A 4802-H
60 mL *TDS Reagent B 4803-H
2 Resin Column 1079
15 mL Methyl Orange Indicator with Halidex 2299-E
1 Test Tube, 5-10-15 mL, glass, w/cap 0778
60 mL Deionized Water 5115PT-H
2 Direct Reading Titrators, 0-1000 Range 0384
1 Pipet, 1.0 mL 0354
1 Demonstration Stage, three cell 1039
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.
Read the LaMotte Direct Reading Titrator Manual before proceeding.
Procedure
1. Place the demonstration stage (0139) on the overhead projector and
turn the projector light on.
2. Fill the test tube (0778) to the 10 mL line with sample water and transfer
to a cell on the demonstration stage (0139).
3. Add three drops of Methyl Orange Indicator with Halidex (2299) to the
cell and stir with the clean spatula.
4. Fill a Direct Reading Titrator (0384) with *TDS Reagent A (4802), add
one drop at a time, while stirring until the yellow color changes to pink.
Read the test result directly from the scale where the large ring on the
Titrator meets the Titrator barrel. This is result “A.” Rinse the titraton
tube.
5. Suspend the resin column (1079) in the second test tube (0778).
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