Prerequisite to quantitative studies on the occurrence and importance of bacteria in the sea or other natural waters is a satisfactory device for collecting water samples for bacteriological analysis from any desired depth. Such a device must be easily sterilized, susceptible to aseptic manipulation under the most rigorous field conditions, possible to operate at high hydrostatic pressures and it must be made of biologically inert materials....
Zobell, Claude E.. 1941. "Apparatus for collecting water samples from different depths for bacteriological analysis." Journal of Marine Research 4, (3). https://elischolar.library.yale.edu/journal_of_marine_research/594