Isobaric Gas-Tight (IGT) Sampler (IMAGE)

Woods Hole Oceanographic Institution

Isobaric Gas-Tight (IGT) Sampler

Caption

The manipulator arm on the remotely operated, deep-sea vehicle Jason uses an Isobaric Gas-Tight (IGT) sampler to collect samples of fluids and microbes spewing from hydrothermal vents surrounded by a community of tubeworms at a site called "Crab Spa" on the East Pacific Rise. IGTs are designed to maintain the microbes at the pressure of their natural environment. Scientists added various chemicals into the IGTs to measure how fast microbes consumed chemicals and converted them into biomass.

Credit

Stefan Sievert, WHOI/NSF/ROVJason, © Woods Hole Oceanographic Institution

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