How to count the number of colonies forming units per milliliter (CFUs per ml) of the sample? Number of colonies forming unitsper millilitre (CFUS per ml) ofsampleDILUTIONSTANDARD PLATE COUNTR1R21/1010-13563761/10010-228225210-310-41/10002231951/100001371051/10000010-595681/100000010-64232(The number of colonies counted X The dilution factor of the plate counted)CFUS per ml of sample =Volume plated

A viable cell is one that has the ability to divide and form a colony. The colony-forming unit (CFU)…

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How to count the number of colonies forming units per milliliter (CFUs per ml) of the sample?

Curren'S Math For Meds: Dosages & Sol

11th Edition

ISBN:9781305143531

Author:CURREN

Publisher:CURREN

Chapter9: Parenteral Medication Labels And Dosage Calculation

Section: Chapter Questions

Problem 4.3P

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Question

How to count the number of colonies forming units per milliliter (CFUs per ml) of the sample?

Number of colonies forming units
per millilitre (CFUS per ml) of
sample
DILUTION
STANDARD PLATE COUNT
R1
R2
1/10
10-1
356
376
1/100
10-2
282
252
10-3
10-4
1/1000
223
195
1/10000
137
105
1/100000
10-5
95
68
1/1000000
10-6
42
32
(The number of colonies counted X The dilution factor of the plate counted)
CFUS per ml of sample =
Volume plated

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