Systems for NMR Spectroscopy

Continuous Flow Cryostat with the
Sample Located in Flowing Vapor
Model STVP-200-NMR

The following drawing shows the Janis Research non-optical SuperTran-VP
(STVP-200) cryostat for NMR spectroscopy.  This continuous flow cryostat maximizes the internal sample space while still minimizing the cryostat outside diameter, providing a large 2.5" sample space while fitting within an 89 mm bore magnet.  (Customized solutions are also available and can include smaller outer diameter to fit small bore magnets, or increased sample chamber diameter to accept larger probes.) Click here for other configurations of STVP cryostats for NMR.

Options include:

• Isothermal zone sample tube (provides uniform sample temperature and enhanced operation with LN₂)

Contact Janis today for details of how our systems can be integrated into your laboratory.

Standard STVP-200-NMR Drawing

OTHER CONFIGURATIONS

Pictured to the left is a non-optical high temperature (475 K) STVP-300 specially designed for NMR experiments.  It will be installed between the pole pieces and magnet windings of a very large electromagnet.  Because the space between the magnet windings is limited, the bayonet arm and vent ports on this STVP-300 had to be made parallel to each other.  The customer supplied a special NMR probe for use inside this cryostat, therefore, no sample positioner was included.

Table of Contents Page Introduction 1 Continuous Flow Cryostat – Sample in Vacuum – ST-200-NMR 2 Continuous Flow Cryostat – Sample in Flowing Vapor – STVP-200-NMR 3 Reservoir Cryostat – Sample in Flowing Vapor – SVT-200T-NMR 4 Reservoir Cryostat – Sample in Liquid Helium – CNDT-NMR 5