Ex. 10: Streak Plate Method of Isolation

Objectives ??

Materials needed per student: 1 nutrient agar (NA)

plate Inoculating loop and

Bunsen burner

Cultures needed: From exercise 7: Your

tube of mixed broth culture, isolated from your body.

Each student works individually for this exercise!

Day 1

Materials needed per student: Streak plate from last session. One new NA plate, inoculating loop

and Bunsen burner

Day 2

Objective ??

The Quadrant Streak

This technique is the most widely used method of obtaining pure (isolated)

colonies from a mixed culture.

What is different here?

Movie Clip on How to Streak a Plate