A Short History of the Discovery of Viruses
    Charles Chamberland (1851 - 1908)  
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, a device  
that consisted of unglazed porcelain  
“candles”, with pore sizes of 0.1 - 1  
micron. This filter could be used to  
completely remove all bacteria or  
other cells known at the time from a  
liquid suspension. This invention  
essentially enabled the establishment  
of a whole new science - virology.
    Not only was it useful for sterilising  
techniques in the laboratory, it also  
filtered and purified water for drinking.  
Pasteur later modified the filter, which  
is why the design carries his name