Question

For a

microbi

ology

experiment, you need

a bacterial culture of

5.4

×

10

6

cells

/ml. You think

your suspension

is

at the right concentration, but

want to further

verify by

a 10

-

fold serial

dilution and

plate count

ing

. What three dilutions should you

use assuming

your original

estimate is correct (

to get countable plates

)

?

Y

ou are

going to plate

0.1 ml

solution for each

of the three

dilutions.