Conductivity

__CONDUCTIVITY​__
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 * Materials**: conductivity meter [[image:http://images.google.com/url?source=imgres&ct=img&q=https://www.nationalmicroscope.com/images/DEC-1.jpg&usg=AFQjCNG2vmRD52JDweiiOsLrxsLORwEZIA width="134" height="175"]]

1. At the site, stick the conductivity meter in the water at different spots 2. Keep the meter in the water for about 3 minutes 3. Press the mode button so the reading freezes in th conductivity meter 4. Record the reading 5. Repeat 5-7 times
 * Directions**:
 * Significance**: Conductivity is a physical measurement that indicates the presence of chemical ions in the water. If there is a high conductivity it could mean that there is metal in the water, and if there is metal in the water it could mean the water is polluted.

freshwater stream: 100-2000 umhos/cm
 * Typical Results**: