Cell Dilution Calculator

Dilute a concentrated cell suspension to a target concentration.

How the Math Works

The Cell Dilution Calculator uses the fundamental dilution equation C₁V₁ = C₂V₂, where C represents concentration and V represents volume. This relationship states that the concentration of a solution before dilution (C₁) multiplied by its volume (V₁) equals the concentration after dilution (C₂) multiplied by its final volume (V₂). To find the volume of stock solution needed (V₁), we rearrange the formula to V₁ = C₂V₂ ÷ C₁. This calculation ensures the number of cells remains constant while spreading them across a larger volume at a lower concentration.

Practical Applications

To use this calculator practically, first determine your target cell concentration (C₂) and the total volume you need (V₂) for your experiment. Next, identify the concentration of your stock cell suspension (C₁). Input these three values into the calculator, and it will output the exact volume of stock solution (V₁) you need to transfer. For example, if you need 10 mL of a 1,000,000 cells/mL suspension from a stock of 10,000,000 cells/mL, the calculator determines you need 1 mL of stock plus 9 mL of buffer to reach the correct diluted concentration.

Day-to-Day Use

This calculation is essential in laboratory settings for cell culture work, allowing researchers to prepare cell suspensions at precisely the concentrations needed for experiments. Whether you're setting up cell growth assays, preparing cells for microscopy, or creating cell plugs for tissue engineering, accurate dilutions ensure reproducible results. In biotechnology and pharmaceutical research, proper cell dilution prevents overcrowding that could contaminate cultures or under-concentration that might fail experimental protocols. Mastering this calculation saves time, reduces waste of precious cell samples, and ensures experimental success across countless life science applications.

Worked example

5M/mL to 1M/mL in 10 mL → 2 mL stock + 8 mL medium.

FAQ