Charles Chamberland was a French microbiologist who worked with Louis Pasteur. In 1884 he developed a type of filtration known today as the Chamberland filter or Chamberland-Pasteur filter, constituting of an unglazed porcelain bar. Microbiology is the study of microbes or organisms at a micro level. ... Louis Pasteur (December 27, 1822 – September 28, 1895) was a French microbiologist and chemist who demonstrated the germ theory of disease and developed techniques of inoculation, most notably the first vaccine against rabies. ... 1884 is a leap year starting on Tuesday (click on link to calendar). ... Porcelain is a hard ceramic substance made by heating at high temperature selected and refined materials often including clay in the form of kaolinite. ...