Soren Sørensen

Søren Sørensen was a Danish biochemist known for developing the pH scale in 1909, which measures how acidic or basic a solution is. The pH scale ranges from 0 (most acidic) to 14 (most basic), with 7 being neutral. Sørensen's work provided a simple way to quantify acidity and alkalinity, essential in chemistry, medicine, and environmental science. His invention helps scientists and professionals understand and control chemical reactions, ensure product stability, and monitor environmental systems. Sørensen’s contribution has become fundamental for analytical chemistry and many applied sciences.