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Marine Sciences Division

Hyperbaric Lab

In the hyperbaric laboratory, we research physical, chemical, and biological processes occurring in ocean waters as deep as 2 km below the surface. We have six 2-liter Parr reactor vessels that are rated to 3,000 psi and equipped with custom cooling systems able to chill vessels to about 4°C. These reactors are constructed out of 2205 Duplex and Hastelloy C stainless steel to permit year-long exposure to seawater or concentrated brines. The vessels may be stirred or static. To extract/inject fluids from the Parr reactors while maintaining pressure, we have a pair of temperature controlled Teledyne syringe pumps (rated to 7500 psi). These pumps can also be used for pressurizing a set of stand-alone view cells equipped with opposing sets of sapphire glass windows that allow users to illuminate and observe the pressurized fluids.

PARR pressure vessels

PARR pressure vessels

Teledyne pumps

Teledyne pumps

High-pressure view cell

High-pressure view cell

PARR reactors with custom chilling jackets

PARR reactors with custom chilling jackets

Marine Sciences Laboratory

Research Areas

PNNL Websites



Class-100 Clean Laboratories

Trace Elemental and Chemical Speciation Analytical Capability

Mercury Analytical Laboratory

Organic Chemistry

Biotechnology Laboratories

Microalgal Research

Aquatics Research Laboratories

Hyperbaric Lab

Ice Lab

Oil Lab

Littoral Wave Tank

Biofouling/Biocorrosion Mesocosms

Climate-Simulated Aquaculture Raceway Ponds

Mineral Extraction from Seawater

Chem/Bio Isolation Laboratories

Electromagnetic Field Generators

Electronics/Optics Laboratories

Outdoor Research Platforms

Flow Tank


Experimental Littoral Mesocosms

Wetland Research Sites

Research Vessels

Lidar Buoys

Scientific Dive Team

Littoral RDT&E Center