To encourage high-pressure biological/geochemical research and to facilitate collaboration among researchers, the Deep Carbon Observatory (DCO) supported the custom development of the 50 mL Pressurized Underwater Sample Handler(PUSH50). Key attributes of the PUSH50 are its capability to both sample and transport biological samples under constant pressure and its certification for airline transport. The PUSH50 includes a 50mL reservoir and can maintain samples at up to100 MPa and 160 °C.
DCO instrumentation support is being used to establish two high-pressure facilities with sample and transport equipment that will be available for use by the DCO Community. Initially, each facility will include five PUSH50s as well as a skid, pump, compensator and pressure sensor. These new facilities will be set up in 2016 in the laboratories of Isabelle Daniel (Université Claude Bernard Lyon1) and Karyn Rogers (Rensselaer Polytechnic Institute) where the PUSH50s and their accompanying equipment are being tested. As constructed, the PUSH50 is compatible for use on a SeaBird carousel but plans will be made to adapt it for use with submersibles and other deep-sea sampling equipment. The transporters, now known as PUSH50s, were delivered to Drs. Daniel and Rogers in September 2015.
The PUSH50 is used by Isabelle Daniel and Hervé Cardon (both of Université Claude Bernard Lyon, France) to collect fluid samples at pressure from monitoring wells of the Hellisheidi power plant (Iceland) as part of a Science for Clean Energy (S4CE) project (September 2018.)