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Colony Forming Unit of Bacteria Formula

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Colony Forming Unit per ml is a measure of viable bacterial or fungal cells. In direct microscopic counts (cell counting using haemocytometer) where all cells, dead and living, are counted. Check FAQs

CFU = \frac{n c \cdot DF}{v c}

CFU - Colony Forming Unit per ml?n_c - No. of Colonies?DF - Dilution Factor?v_c - Volume of Culture Plate?

Colony Forming Unit of Bacteria Example

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Here is how the Colony Forming Unit of Bacteria equation looks like with Values.

Here is how the Colony Forming Unit of Bacteria equation looks like with Units.

Here is how the Colony Forming Unit of Bacteria equation looks like.

0.0063 = \frac{9 \cdot 7}{10}

0.0063Cells/L = \frac{9 \cdot 7}{10m³}

0.0063 = \frac{9 \cdot 7}{10}

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Colony Forming Unit of Bacteria Solution

Follow our step by step solution on how to calculate Colony Forming Unit of Bacteria?

FIRST Step Consider the formula

CFU = \frac{n c \cdot DF}{v c}

Next Step Substitute values of Variables

∴

CFU = \frac{9 \cdot 7}{10m³}

Next Step Prepare to Evaluate

∴

CFU = \frac{9 \cdot 7}{10}

Next Step Evaluate

∴

CFU = 6.3Cells/m³

LAST Step Convert to Output's Unit

∴

CFU = 0.0063Cells/L

Colony Forming Unit of Bacteria Formula Elements

Variables

Colony Forming Unit per ml

Colony Forming Unit per ml is a measure of viable bacterial or fungal cells. In direct microscopic counts (cell counting using haemocytometer) where all cells, dead and living, are counted.

Symbol: CFU

Measurement: Blood CellsUnit: Cells/L

Note: Value should be greater than 0.

Formulas to find Colony Forming Unit per ml

No. of Colonies

No. of Colonies is a group of bacteria, fungi, and other microorganisms grown on a solid agar medium.

Symbol: n_c

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find No. of Colonies

Dilution Factor

Dilution Factor is the factor by which the stock solution is diluted.

Symbol: DF

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Dilution Factor

Volume of Culture Plate

Volume of Culture Plate is the the amount of a substance occupying a particular volume of culture plate.

Symbol: v_c

Measurement: VolumeUnit: m³

Note: Value should be greater than 0.

Formulas to find Volume of Culture Plate

Other formulas in Bacteriology category

Go Growth Rate of Bacteria

G = \frac{T}{n}

Go No. of Generation using Generation Time for Bacteria

n = \frac{T}{G}

Go Growth Rate Constant of Bacteria

k = \log 2 \frac{\frac{N t}{N 0}}{T}

Go Volume of Culture Plate of Bacteria

v c = \frac{n c \cdot DF}{CFU}

How to Evaluate Colony Forming Unit of Bacteria?

Colony Forming Unit of Bacteria evaluator uses Colony Forming Unit per ml = (No. of Colonies*Dilution Factor)/Volume of Culture Plate to evaluate the Colony Forming Unit per ml, The Colony Forming Unit of Bacteria formula is defined as the measure of viable bacterial or fungal cells. CFU measures only viable cells. Colony Forming Unit per ml is denoted by CFU symbol.

How to evaluate Colony Forming Unit of Bacteria using this online evaluator? To use this online evaluator for Colony Forming Unit of Bacteria, enter No. of Colonies (n_c), Dilution Factor (DF) & Volume of Culture Plate (v_c) and hit the calculate button.

FAQs on Colony Forming Unit of Bacteria

What is the formula to find Colony Forming Unit of Bacteria?

The formula of Colony Forming Unit of Bacteria is expressed as Colony Forming Unit per ml = (No. of Colonies*Dilution Factor)/Volume of Culture Plate. Here is an example- 6.3E-6 = (9*7)/10.

How to calculate Colony Forming Unit of Bacteria?

With No. of Colonies (n_c), Dilution Factor (DF) & Volume of Culture Plate (v_c) we can find Colony Forming Unit of Bacteria using the formula - Colony Forming Unit per ml = (No. of Colonies*Dilution Factor)/Volume of Culture Plate.

Can the Colony Forming Unit of Bacteria be negative?

No, the Colony Forming Unit of Bacteria, measured in Blood Cells cannot be negative.

Which unit is used to measure Colony Forming Unit of Bacteria?

Colony Forming Unit of Bacteria is usually measured using the Cells per Liter[Cells/L] for Blood Cells. Cells per Microliter[Cells/L], Thousand Cells per Microliter[Cells/L], Cells per Cubic meter[Cells/L] are the few other units in which Colony Forming Unit of Bacteria can be measured.

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Colony Forming Unit of Bacteria Formula

Colony Forming Unit of Bacteria Example

Colony Forming Unit of Bacteria Solution

Colony Forming Unit of Bacteria Formula Elements

Other formulas in Bacteriology category

How to Evaluate Colony Forming Unit of Bacteria?

FAQs on Colony Forming Unit of Bacteria

Variable Name