PPM Formula:
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PPM (parts per million) is a unit of concentration that represents the number of parts of a substance per million parts of the total solution. It is commonly used in chemistry, environmental science, and quality control to express very dilute concentrations.
The calculator uses the PPM formula:
Where:
Explanation: This formula calculates the concentration by dividing the mass of the solute by the total mass of the solution and then multiplying by one million to express it in parts per million.
Details: PPM calculations are essential for measuring trace amounts of substances in various fields including water quality testing, air pollution monitoring, food safety standards, and pharmaceutical manufacturing.
Tips: Enter the mass of solute and mass of solution in grams. Both values must be positive numbers, and the mass of solute cannot exceed the mass of solution.
Q1: What does PPM stand for?
A: PPM stands for "parts per million" and represents one part per 1,000,000 parts.
Q2: When is PPM commonly used?
A: PPM is used for very dilute concentrations in water treatment, air quality measurement, chemical solutions, and quality control processes.
Q3: How does PPM relate to percentage?
A: 1% = 10,000 PPM, so PPM is used for concentrations that are too small to conveniently express as percentages.
Q4: Can PPM be used for volume measurements?
A: For gases and liquids with similar densities, PPM can approximate volume/volume concentrations, but for precise work, mass-based calculations are preferred.
Q5: What are typical PPM ranges in drinking water?
A: Common contaminants in drinking water are regulated at PPM levels, such as lead (0.015 PPM), arsenic (0.010 PPM), and nitrate (10 PPM).