Phosphates

PHOSPHATES

At Site:

Go out in the boat and once at a depth appropriate for taking a water sample throw the armed water sampling device into the water. Jerk the rope once the device has reached a good depth and retrieve the water sample. Pour the sample into a labeled bottle. Repeat this process, except for the top of the water.

In class: Obtain the samples from the fridge. Hook up the testing machine. Follow the protocol sheet for correct programming instructions. Pour a sample of the water into a blank and have the machine read this. Then break a vial of the phosphate testing substance in a separate sample of water and have the machine read this. Record the reading on the machine.