Nivo Labs Research Education
Research Concentration and Dilution Calculations
Concentration describes how much research material is present within a specific volume of solution. Understanding this relationship is essential for accurate laboratory preparation and documentation.
Laboratory calculations only. Not personal dosing or medical guidance.
Three Essential Measurements
Milligrams
mg measures the quantity of research material.
Milliliters
mL measures the volume of liquid.
Concentration
mg/mL describes the amount in each milliliter.
Calculating Concentration
Total milligrams ÷ Total milliliters = mg/mL
Example
A laboratory sample contains 10 mg of material in a total volume of 2 mL.
10 mg ÷ 2 mL = 5 mg/mL
Calculating the Required Volume
Required milligrams ÷ Concentration = Required volume
Laboratory Example
A protocol requires a 1 mg research sample from a solution with a concentration of 5 mg/mL.
1 mg ÷ 5 mg/mL = 0.2 mL
Accuracy Checklist
- Confirm the stated quantity before calculating.
- Use the final total solution volume—not only the solvent added.
- Keep milligrams, milliliters and other units clearly identified.
- Use calibrated laboratory equipment.
- Record the calculation, preparation date and lot number.
- Have calculations independently verified when required.
Important: These examples demonstrate laboratory
mathematics only. They are not instructions for human or veterinary
administration.
