3. Using a pipette, transfer 7 ml of the appropriate solution into each of the Petri dishes on the filter paper. For the controls, use distilled water.

Green Tape Sample
is Sample #1

Blue Tape Sample
is Sample #2

White Tape Sample
is Sample #3

Red Tape Sample
is Sample #4
SWIRL VIDEO

Swirl/Gently
Mix each
water sample
before
pouring
the solution
on the
coffee filter.

Pour the water samples
evenly over the coffee filter.

 Pipet Video

This green thing
is called a pipetter.
The water sample
moves through
the glass pipette
when the student
in the video
presses the roller
on the pipetter.