STVP-200-NMR Cryostat for NMR Spectroscopy

Similar to the standard STVP-200 tubular system, but custom-designed for NMR spectroscopy.

Standard configuration

STVP-200-NMR spectroscopy cryostat

The mechanical 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 in 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.)

Options include:

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

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STVP-200-NMR cryostat

STVP-200 Specifications

Temperature range1.5 to 325 K (consult with Janis for other temperatures)
Initial cooldown time15 min (STVP series: 100-400)
30 min (STVP-NMR)
Nominal temperature stability (with controller)50 mK or less
OrientationVertical for <4.5 K
System weight (without transfer line)15 lb (6.8 kg)
Cryogen consumption on cooldown0.5 L LHe (325 to 4.2 K)
Nominal cryogen consumption rate1.3 L/h LHe (5 K) (STVP-100 [1,2,3] and STVP-200 [1,2,3])
1.4 L/h LHe (5 K) (STVP-NMR)
NOTE: Specifications do not include optical or experimental heat loads and assume vertical orientation.
NOTE Consult Janis for high temperature or LN2 operations for SuperTran-VP.

Typical cryogen consumption of optical SuperTran cryostats

SuperTran SuperTran-VP Liquid Helium consumption rate

Optional configurations

Other tubular configurations:

  • High temperature (500 K)
  • Compact vacuum shroud
  • Extra-long tails
  • Large diameter sample space
  • Customized vacuum shroud lengths
  • Isothermal zone sample tube (provides uniform sample temperature and enhanced operation with LN2