# Question: How Is Dilution Factor Calculated?

## What is a 1 in 10 dilution?

For example, to make a 1:10 dilution of a 1M NaCl solution, you would mix one “part” of the 1M solution with nine “parts” of solvent (probably water), for a total of ten “parts.” Therefore, 1:10 dilution means 1 part + 9 parts of water (or other diluent)..

## What is a 1 to 100 dilution?

For a 1:100 dilution, one part of the solution is mixed with 99 parts new solvent. Mixing 100 µL of a stock solution with 900 µL of water makes a 1:10 dilution. The final volume of the diluted sample is 1000 µL (1 mL), and the concentration is 1/10 that of the original solution.

## What is a 1 to 4 dilution?

A 1:4 dilution ratio means that a simple dilution contains one part concentrated solution or solute and four parts of the solvent, which is usually water. For example, frozen juice that requires one can of frozen juice plus four cans of water is a 1:4 simple dilution.

## What is a 1 in 20 dilution?

These two components proportionally combine to create a dilution. … For example, a 1:20 dilution converts to a 1/20 dilution factor. Multiply the final desired volume by the dilution factor to determine the needed volume of the stock solution. In our example, 30 mL x 1 ÷ 20 = 1.5 mL of stock solution.

## Do you multiply or divide by dilution factor?

A serial dilution is any dilution in which the concentration decreases by the same factor in each successive step. In serial dilutions, you multiply the dilution factors for each step. The dilution factor or the dilution is the initial volume divided by the final volume.

## How do you multiply by dilution factor?

This method is called multiplying by the inverse (of the dilution factor).If the dilution factor is in the form of a fraction, “flip” the fraction. (i.e., 1/50 becomes multiply by 50/1).If the dilution factor is in decimal form, multiply by 1 over the decimal. (i.e., 0.02 becomes multiply by 1/0.02).

## What is the difference between dilution and dilution factor?

Dilution is the process of diluting or mixing two or more substances or even compounds. … Dilution is also a term for reducing the concentration of a formula. Dilution factor or DF, on the other hand, is a term used to describe the ratio of the final volume over the aliquot volume.

## How do you find the dilution factor?

Dilution FactorThe final volume is equal to the aliquot volume PLUS the diluent volume: 0.1 mL + 9.9 mL = 10 mL.The dilution factor is equal to the final volume divided by the aliquot volume: 10 mL/0.1 mL = 1:100 dilution.

## How do you use dilution factor?

Example 2: Suppose you must prepare 400 ml of a disinfectant that requires 1:8 dilution from a concentrated stock solution with water. Divide the volume needed by the dilution factor (400 ml / 8 = 50 ml) to determine the unit volume. The dilution is then done as 50 ml concentrated disinfectant + 350 ml water.

## How can you determine the dilution factor of a prepared dilution?

Definition of Dilution Factor What it means is, take a known volume of the stock solution (Vinitial) and add enough solvent to it so that the solution has a new volume, Vfinal, of 50 x Vinitial. The “1:50” tells you the dilution factor, the ratio of volumes, to use to prepare the new solution.

## What is a 1 to 2 dilution?

By taking one volume of the original solution and diluting it to two volumes. For example, you could take 5 ml of solution and dilute it to 10 ml.

## What is a 1 in 5 dilution?

Answer: 1:5 dilution = 1/5 dilution = 1 part sample and 4 parts diluent in a total of 5 parts. If you need 10 ml, final volume, then you need 1/5 of 10 ml = 2 ml sample. To bring this 2 ml sample up to a total volume of 10 ml, you must add 10 ml – 2 ml = 8 ml diluent.