Why is my Echo Flask™ hydrogen measured in Mg/L and not PPMs?

Measuring hydrogen (H₂) in mg/L (milligrams per liter) is effectively the same as measuring it in PPM (parts per million) when discussing water (1 PPM equals 1 milligram (mg) of hydrogen per liter (L) of water), but mg/L provides a more scientifically accurate and universally understood unit of measurement. Here's why:

• mg/L is a direct measurement of weight per volume, making it more precise
• PPM can sometimes cause confusion since it's a ratio-based measurement that depends on the medium (air, water, etc.), while mg/L explicitly defines the amount of a substance in a given volume of water.
  • Saying "H₂ concentration is 4 PPM" might be misinterpreted, but "H₂ concentration is 4 mg/L" leaves no room for ambiguity about the medium.
• mg/L is a standard metric unit used in chemistry, environmental science, and health studies, ensuring compatibility with other scientific data and instruments.
  • Devices like dissolved hydrogen meters often measure directly in mg/L, reinforcing its use as a precise unit.
• While PPM is user-friendly and widely used in marketing and general discussions, it might oversimplify the science. For customers interested in the technical aspects, mg/L demonstrates accuracy and credibility, aligning with laboratory-grade measurements.

Conclusion

While PPM and mg/L are equivalent for water, mg/L provides a more precise and professional expression of hydrogen concentration. It reduces ambiguity, aligns with scientific norms, and helps build trust in the measurement's reliability.