Hyperbaric Laboratory at PNNL-Sequim
![PARR Reactors photo](/sites/default/files/styles/hero_1600x1200/public/media/image/parrreactors.png?h=89de98e4&itok=R8p5JGAJ)
PARR reactors with custom chilling jackets
PNNL-Sequim has a hyperbaric laboratory where research is conducted on the physical, chemical, and biological processes occurring in ocean waters as deep as 2 km below the surface. There are six 2-liter Parr reactor vessels available 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, there are a pair of Teledyne syringe pumps (rated to 7500 psi). These pumps are used to inject and pull samples of stand-alone view cells equipped with opposing sets of sapphire glass windows that allow users to observe the pressurized fluids.
![PARRPressureVesselsphoto](/sites/default/files/media/image/parr.png)
![Teledyne pumps](/sites/default/files/media/image/teledynepumps.png)
![High-pressure view cell photo](/sites/default/files/media/image/highpressureviewcell.png)