Water Testing

Examine free activities to use in your next water testing lesson. Flinn Scientific developed and organized various resources with the academic classroom in mind.

Testing the Waters

Water quality is a relative term—not a clearly defined, single set of guidelines applicable in all circumstances. Water that is of acceptable quality for irrigating a field of soybeans is not necessarily safe, or palatable for drinking. Before water quality can be assessed the intended use must be known and an acceptable range of standards must be set. In a sense, water quality can be thought of as water suitability.

Winkler Titration

The Winkler method is the standard technique for the determination of dissolved oxygen in fresh and salt water. This scaled-down procedure requires reduced sample volume, reduced reagent volumes, less expense, and less time.

Determination of Iron in Water

Use spectrophotometric methods to determine the concentration of iron in a water sample.

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