NMR cell system for supercritical fluid measurements and high-pressure cell for NMR

An NMR cell system for supercritical fluid measurements, said NMR cell system comprising:

• a cylindrical cell having a bottom and receiving a sample, said cell having an open end;
• a cell holder mounted at the open end of said cylindrical cell;
• an external pumping system;
• and
• a cell space-limiting means formed inside said cylindrical cell to prevent convection of a supercritical fluid.

An NMR cell system for supercritical fluid measurements, said NMR cell system comprising:

• a cylindrical cell having a bottom and receiving a sample, said cell having an open end;
• a cell holder mounted at the open end of said cylindrical cell, said cell holder arranged as a cylinder for pressurizing the sample;
• a piston mounted inside said cell holder to separate pressurized materials from the sample and applying pressure to said sample in said cell;
• an external pumping system for introducing a sample into said cylindrical cell and applying pressure to said sample;
• a pipe connected with the upper space of said piston in communication with said external pumping system, said pipe being used for applying pressure to the sample;
• and
• another pipe connected with the lower space of said piston in communication with said cylindrical cell, said pipe being used for introducing a sample into said cylindrical cell.