Procedure for testing conductivity
1 Insert the voltage probes correctly into the multimeter, so that the black probe is attached to outlet labeled COM, and the red probe is attached to the outlet with the label VWm4. Scrub the ends of the probes thoroughly with the nylon scrub
2 Turn the multimeter so that it is set at 2000 KW.
3 Put on protective gloves and goggles.
4 Collect a sample in a clean plastic film either with the TERC water pump for samples or the sample collection method described for surface samples. Fill the canister up to the top with the sample.
5 Immediately after drawing the sample, place the two probes into the canister and press them against opposite sides of the container.
6 Count to five. Then observe and record the reading on the multimeter. This reading is in kiliohms.
7 Divide your reading by 3 cm (the diameter of the film canister and the distance from the probe). This gives you a measurement in units of KW/cm.
8 Scrub the ends of the probes thoroughly with the nylon scrub pad and rinse the canister with clean water three times between samples.
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