He is best known today for his discovery of the Winkler method for the measurement of oxygen dissolved in water.

He stayed on to work as a lecturer, among other positions, and directed the Institute of Chemistry, starting in 1909, for more than 25 years.

A common nineteenth-century test for determining dissolved oxygen, as described by Alfred Wanklyn, involved boiling the water sample and collecting, over mercury, the gases released, for subsequent analysis.

[4] In 1888, while still a doctoral student, Lajos Winkler discovered a much safer, and more precise, method of dissolved-oxygen analysis, which is still widely used today.

You can help Wikipedia by expanding it.This biographical article about a chemist is a stub.