Digital Library Search
![Figure 61 ship4437.jpg Figure 61](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_ship4437.jpg?itok=qZDVBAVb)
Description
Figure 61. Pettersson device for the measurement of oxygen and nitrogen in seawater. This device was developed by Professor Otto Pettersson who used it atthe Hydrographic Station at Borno, Sweden. With this apparatus one couldmeasure the oxygen, nitrogren, and carbon dioxide content of sea water. Thisinstrument was first described in 1891. (Image credit: Oceanographic Museum of Monaco | Y. Berard)