Optistat Dry TLEX



The top-loading OptistatDry TLEX for spectroscopy comprises a compact cryostat with optical access, cooled by a closed-cycle refrigerator.


This cryogen free cryostat is capable of cooling samples to helium temperatures without the need for liquid cryogens.


This provides significant benefits for usability, running costs and enables simultaneous optical and electrical measurments via extensive window access and wiring options.

  • Wide sample temperature range from < 4 K to 300 K
  • Quick sample change in < 5 minutes via top loading probe
  • A wide range of different windows and wiring options enable you to upgrade your system as your experimental needs develop
  • No liquid cryogens are required
  • Optimised optical access with f1 and a clear view of 15 mm diameter
  • Ideal for samples that have low thermal conductivity, including powder or samples in liquid phase
  • The sample-in-exchange-gas environment provides all the cooling you need for samples that are not suited for a vacuum environment, such as biological, life science or chemistry experiments
  • Water and air-cooled compressor options available
  • 1 year standard warranty


  • Versatile: Suitable for a wide range of experiments and spectroscopy techniques. Designed to interface with all types of optical benches; the feet match both Imperial (1" spacing) and Metric (25 mm spacing).
  • Top-loading capability: OptistatDry TLEX minimises the time between experiments and maximise sample throughput. Removing the sample rod whilst the cryostat is kept cold enables you to swap from one sample to the next less than 45 minutes. You can leave the cryostat in situ on the optical bench during sample change, eliminating the need for time-consuming re-alignment of your optical set-up.
  • Upgradeable: A wide range of different sample holders, windows and wiring options enable you to upgrade your system as your experimental needs develop.
  • Ease of use: No liquid cryogens are required, Air or water-cooled compressors are available, single phase electrical power means the system is easy to install in all standard laboratory environments. 
  • Optical excellence: Comes with f1 and large optical access as standard. A wide range of different window materials are available to suit different wavelengths, wedged windows and anti-reflection coatings are also available.


  • Temperature range: < 4 K to 300 K 
  • Temperature stability: ± 0.1 K
  • Vibration: typical RMS displacement of 10 microns at the sample position
  • Room temperature to base temperature: < 6 hours
  • Sample change time: < 45 minutes (sample can be changed with the cryostat cold)
  • Cooling power: ~ 0.2 W at 5 K
  • Sample space size: 20 mm diameter
  • Optical access: f1
  • Dimensions (HxWxD): 800-880 (adjustable) x 240 x 400 mm
  • Total cryostat weight: 28 kg


  • The standard cryostat is fitted with 4 optical radial windows and 1 blank axial window
  • Base temperature may be reduced by fitting blanks to each of the windows.
  • Radial window blanks are supplied as spares with the system
  • The maximum operating temperature will be set accordingly in the MercuryiTC supplied with the system

A typical system comprises of:

  • Cryostat
  • Temperature Controller
  • Cryocooler and Compressor
  • Accessories and Manual


  • UV/Visible spectroscopy
  • Infrared spectroscopy
  • Raman spectroscopy
  • Photoluminescence
  • Electrical properties
  • FTIR
  • Fluorescence

Optistat Dry TLEX
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