Stock Solution Dilution Calculator

Dilution Formula:

\[ V_{stock} = \frac{C_{final} \times V_{final}}{C_{stock}} \]

Final Concentration (C_final):

various

Final Volume (V_final):

Stock Concentration (C_stock):

various

Stock Volume (V_stock):

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1. What is the Stock Solution Dilution Formula?

The stock solution dilution formula calculates the volume of concentrated stock solution needed to prepare a desired volume of diluted solution with a specific concentration. This is a fundamental calculation in chemistry and laboratory work.

2. How Does the Calculator Work?

The calculator uses the dilution formula:

\[ V_{stock} = \frac{C_{final} \times V_{final}}{C_{stock}} \]

Where:

\( V_{stock} \) — Volume of stock solution needed (mL)
\( C_{final} \) — Final desired concentration (various units)
\( V_{final} \) — Final desired volume (mL)
\( C_{stock} \) — Concentration of stock solution (same units as C_final)

Explanation: This formula is derived from the principle that the amount of solute remains constant before and after dilution.

3. Importance of Dilution Calculations

Details: Accurate dilution calculations are essential for preparing solutions with precise concentrations in laboratory settings, pharmaceutical preparations, and various scientific experiments.

4. Using the Calculator

Tips: Enter the final desired concentration, final desired volume, and stock solution concentration. All values must be positive numbers. Ensure concentration units are consistent between final and stock concentrations.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for concentration?
A: You can use any concentration units (M, mM, %, mg/mL, etc.) as long as both C_final and C_stock use the same units.

Q2: What if my stock concentration is too low?
A: If the calculated V_stock exceeds V_final, it means your stock solution is not concentrated enough to make the desired dilution.

Q3: How do I prepare the final solution?
A: Measure the calculated V_stock of stock solution and add solvent (usually water) to reach the final volume V_final.

Q4: Can I use this for serial dilutions?
A: This calculator is for single-step dilutions. For serial dilutions, you would need to perform multiple calculations.

Q5: What if I need to calculate other dilution parameters?
A: The formula can be rearranged to solve for any of the four variables if the other three are known.