The Alliance for Coastal Technologies Releases pH Test Results
In 2013 and 2014, Satlantic participated in the Alliance for Coastal Technology (ACT) pH sensor verification study to characterize performance in a variety of settings. The independent study was conducted on the SeaFETTM, which included a lab test and field trials in Moss Landing Harbor in California, Kaneohe Bay in Hawaii, Chesapeake Bay (low salinity), and Lake Michigan (fresh water). The Hawaii deployment was an extended three month deployment, while the other field tests were one month each. These tests covered a range of pH (7.8-8.4), temperatures (4-26 C) and salinity (0-35 pss).
The ACT team has recently made the results from the study available and Sea-Bird Scientific is pleased to confirm that the SeaFETTM performed very well, with high quality data sets collected at all sites. A fouling guard was used at Moss landing to control bio-fouling, while a flow cell and Sea Bird SBE 5P pump were used at the other sites. During the deployment in Hawaii, the SeaFETTM operated maintenance free for 3-months while maintaining close correlation with the ACT reference data.
The Chesapeake Bay deployment provided a good test in a high-fouling, variable salinity environment. Again, the SeaFETTM performed exceptionally, tracking the reference pH measurements throughout the entire pH and salinity ranges. The SeaFETTM was also operated in fresh water for the very first time during the Lake Michigan test where the SeaFETTM followed the pH trends very well, albeit with a slight offset that was subsequently corrected using bottle sample data. These results prove that the SeaFETTM is capable of producing rich datasets from extended deployments in a variety of conditions.
Above: SeaFETTM and integrated SBE pump after recovery from Hawaiian test site.
Read the performance verification statement. [PDF]