The gas tights are custom-designed titanium tools used to collect vent fluid samples inside a chamber that is sealed off to gas exchange. Fluid samples from the gas tight samplers are analyzed for dissolved gases, such as hydrogen, methane, and carbon dioxide. The sampling device operates like a syringe, where the ROV pilot triggers a release on the bottle to draw in sample. All fluid sampling devices are fit with "T-handles" so that the manipulator arm claw can easily clench them. Image courtesy of IFE, URI-IAO, UW, Lost City science party, and NOAA.
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