1. Locate three suitable location for taking the samples.

2. Prepare the equipment needed.

3. Put in the equipment into the water

4. Make sure that the water levels are higher than the minimum water level required in using the equipment.

5. Let the taster bar in the water for 3 minutes.

6. Using this equipment , we can take all the three reading for three different tests on the same time.

7. Record the reading for three times using the same procedure.