Alligation Calculator

Free calculate mixture ratios using alligation method for pharmaceutical compounding and solution blending.

Enter Alligation Data

Results

Enter alligation data to calculate ratios

Alligation Method

Alligation Rule

Higher Conc - Desired Conc = Parts of Lower

Desired Conc - Lower Conc = Parts of Higher

  • • Used in pharmaceutical compounding
  • • Calculates mixing ratios
  • • Ensures accurate concentrations
  • • Prevents calculation errors

Applications

  • • Drug compounding
  • • Solution preparation
  • • Concentration blending
  • • Quality control
  • • Laboratory work
  • • Manufacturing

Alligation Example

Problem

Mix 50% and 10% solutions to make 25% solution

  • • Higher concentration: 50%
  • • Lower concentration: 10%
  • • Desired concentration: 25%

Solution

  • • Parts of 50%: 25 - 10 = 15
  • • Parts of 10%: 50 - 25 = 25
  • • Total parts: 15 + 25 = 40
  • • Ratio: 15:25 or 3:5

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