Media Preparation Calculator

A dilution ratio expresses the relationship between the amount of stock solution and solvent (usually water or buffer). For example, a 1:5 ratio means 1 part stock solution to 5 parts solvent, resulting in a 6-fold total dilution.

The dilution factor is calculated by dividing the initial concentration by the final concentration. For example, if you dilute from 100 mM to 10 mM, the dilution factor is 10 (or 1:10 dilution).

You can use various concentration units including molar (M), millimolar (mM), micromolar (μM), nanomolar (nM), picomolar (pM), and mass per volume units like mg/mL, μg/mL, or cells/mL for cell culture applications.

To prepare a stock solution, dissolve the required amount of compound in a small volume of solvent first, then add more solvent to reach the desired final volume and concentration. Always check pH and sterility requirements for cell culture applications.

Dilution factor represents how many times the original solution is diluted (e.g., 10x dilution). Dilution ratio shows the parts of stock to parts of solvent (e.g., 1:9 ratio for a 10x dilution).

This calculator is designed for single-step dilutions. For serial dilutions, you would need to calculate each step individually, using the output of one dilution as the input for the next.

When preparing cell culture media, consider sterility, pH, osmolarity, and temperature. Always use sterile techniques, check expiration dates of components, and verify that the final pH is appropriate for your cell type.

Accuracy depends on your application. For routine cell culture, ±5% accuracy is usually sufficient. For critical experiments or research, aim for ±1-2% accuracy using calibrated pipettes and analytical balances.