Dilution Factor Calculator Dilutant to Stock Ratio

This calculator helps determine the dilution factor needed to prepare a solution with a desired concentration by calculating the dilutant to stock ratio. It's commonly used in laboratory settings, pharmaceutical preparation, and chemical mixing applications.

Input Parameters

Calculation Results

Calculation Formula

Dilution Factor (DF) = C₁ / C₂ = (Vf - Vd) / Vd

Where:
C₁ = Initial Stock Concentration
C₂ = Desired Final Concentration
Vf = Final Volume
Vd = Volume of Dilutant Added

Dilution Factor Calculator Dilutant to Stock Ratio Calculator Usage Guide

Learn how to use the Dilution Factor Calculator Dilutant to Stock Ratio calculator and its working principles

How to Use This Calculator

  1. Enter the Desired Final Concentration (C₂) - This is the concentration you want to achieve in your final solution.
  2. Enter the Initial Stock Concentration (C₁) - This is the concentration of your stock solution.
  3. Enter the Volume of Dilutant to Add (Vd) - This is the volume of the pure dilutant (usually solvent like water) you will add to the stock solution.
  4. Click the Calculate button to compute the results.

Understanding the Results

The calculator provides two main results:

  • Dilution Factor (DF) - This indicates how much the stock solution is diluted. A higher DF means more dilution.
  • Required Final Volume (Vf) - This is the total volume of the final solution after adding the dilutant.

Example Calculation

Suppose you have a 1M stock solution (C₁ = 1M) and you want to prepare 100mL of a 0.1M solution (C₂ = 0.1M). If you're adding 50mL of water (Vd = 50mL), the calculator will determine that the dilution factor is 10 and the final volume should be 100mL.

Principle of Dilution

Dilution calculations are based on the principle that the amount of solute remains constant during dilution. The formula used is:

C₁V₁ = C₂V₂

Where V₁ is the initial volume of the stock solution, and V₂ is the final volume of the diluted solution. By rearranging this formula, we can determine the required final volume if we know the initial concentration, desired concentration, and the volume of dilutant to add.