1. What is Alligation?

Alligation is a method used to calculate the ratio in which two or more ingredients with different concentrations must be mixed to obtain a desired concentration.

2. How Does the Calculator Work?

The calculator uses the alligation formula:

Where:

• \( High \) — Higher concentration solution
• \( Desired \) — Target concentration
• \( Low \) — Lower concentration solution

Explanation: The result shows the parts of high concentration solution needed per part of low concentration solution to achieve the desired concentration.

3. Importance of Alligation

Details: Alligation is crucial in pharmacy for preparing custom concentrations of medications, in chemistry for solution preparation, and in various industrial mixing applications.

4. Using the Calculator

Tips: Enter the concentrations of your high and low solutions, and your desired concentration. All values must be positive numbers with high > desired > low.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use?
A: The units don't matter as long as all concentrations are in the same units (the ratio is unitless).

Q2: What if my desired equals my high or low?
A: If desired equals high, you only need the high concentration solution. If it equals low, you only need the low concentration solution.

Q3: Can I use this for more than two solutions?
A: This calculator handles two solutions. For more complex mixtures, you would need to perform multiple alligation calculations.

Q4: What if I get a negative ratio?
A: This means your desired concentration is outside the range between your high and low concentrations.

Q5: How precise is this method?
A: The method is mathematically exact for ideal solutions where volumes are additive.