Micro Lab: Streak and Spread Swab Techniques

Helpfulness: 0
Set Details Share
created 6 years ago by OceansVoice
31 views
show moreless
Page to share:
Embed this setcancel
COPY
code changes based on your size selection
Size:
X
Show:
1

What is the goal of creating a spread plate?

To distribute bacteria so that a uniform layer of growth is present across the entire plate.

2

What are spreads commonly used for?

antibiotic and disinfectant testing

3

What is necessary in order for the spread tests to be done in a uniform manner?

the amount of bacteria inoculated onto a spread plate must be the same from plate to plate

4

How do we achieve uniformity from plate to plate in spread tests?

by creating solutions with the same turbidity

5

turbidity

a measure of how cloudy or hazy a solution is as a result of bacterial growth

6

McFarland standard

This standard is an inert solution with a set turbidity.

7

What is the purpose in creating a bacterial solution with the same turbidity as the standard?

We will be applying a known and consistent concentration of bacteria to all plates