Our nitrogen cooled 77 K cryostat, MicrostatN is very compact and lightweight and only requires a compact nitrogen container which is very convenient when space is limited.

  • Wide temperature range: from 77 K to 500 K
  • Extremely compact: 90 mm diameter by 24 mm thickness
  • Economical use of cryogens: less than 0.5 L/h
  • Quick cooldown: 80 K in less than 10 minutes
  • Adjustable sample holders accommodate samples up to 8 mm thickness
  • Easy integration into commercial microscopes facilitated by its compact size and short working distance (as low as 3 mm)
    Interface place available as option for attaching the MicrostatN2 directly into microscope translation stage
  • Suitable for reflection and transmission experiments via choice of sample holders
  • Electrical measurements via 4-pin electrical feed wire to heat exchanger


Operating temperature range 77 K to 500 K
Temperature stability

± 1 K from 80 K to 120 K

± 0.5 K from 120 K to 500 K

Nitrogen consumption < 0.5 litres/hour at 80 K
Cooldown time < 10 minutes from ambient to 80 K with transfer tube cold
Sample holder drift at constant temperature

± 1.0 μm /hr (see note below)

Maximum sample size

20 mm diameter x 2 mm (in reflection)

15 mm diameter x 8 mm (in transmission)

Sample window material

Spectrosil B fused quartz

Other materials available on request

Standard temperature sensor Platinum resistor
Sample change time ~30 minutes
Weight 0.4 kg

Note: Approximate measurement; the stability is not measured or guaranteed and will be dependent upon the final system’s configuration
and the environment that the equipment is used in.

Optical Specifications

Optical Specifications Reflectance
Window Thickness 0.5 mm 1.5 mm
Clear access diameter 10 mm 25 mm
Sample holder to window top surface 3 mm 3 mm

Angle of admittance
(to surface of sample holder at centre)

126o 160o
Max sample thickness 2 mm 1 mm
Max sample diameter 20 mm  20 mm

Note: All dimensions are approximate and relate to the top window with plain sample holder.

System Options


  • A wide range of window materials can be fitted to the MicrostatN - see the 'Windows for optical cryostats guide' in Downloads and Links
  • A 0.5 mm thick, 10 mm optical access Spectrosil B quartz window is fitted as standard. We also offer an option for a 25 mm access diameter, 1.5 mm thick
  • Transmission experiments use an alternative bottom flange with a second window fitted and a transmission sample holder
  • Additional or replacement window flanges available via the Oxford Instruments Direct - Cryospares® online catalogue

Temperature controller

  • MercuryiTC Intelligent cryogenic environment controller



Research areas Technique (optical & microscope based techniques)

Study of molecular bonds in crystal lattices

Study of molecular energy levels Micro-Raman Scattering and inelastic light scattering
Studies of Quantum Dot structures in AS/GaHS Micro-luminescence

Semiconductors -
Quantum systems -




Transfer tube - It plays an important part in the overall helium consumption and base temperature capability of helium cooled cryostat. 

Oxford Instruments Low Loss Transfer tubes (LLT) use the cold gas exiting the cryostat to cool the shields surrounding the incoming liquid within the transfer tube.  As a result, the consumption of our cryostats is the lowest on the market, dramatically reducing your running costs.

We can also offer an extra flexible transfer tube for those with restricted space in their labs. Please note that as this does not use the gas cooled mechanism, helium consumption will be higher that for the LLT range. However, it will be well suited to those who need lightweight and more flexible transfer tube.

Gas flow controller - The VC-U gas flow controller now includes the nitrogen and helium flow meters as standard.

Intelligent cryogenic environment controller - Easy monitoring and control of the sample stage. The MercuryiTC controller combines several instruments into one allowing temperature control at the heat exchanger and glas flow control as well as an extra sensor channel for thermometry measurement directly at the sample stage. Everything can be accessed through touch screen front panel and remotely.

Downloads & further information

To download our Microstat product guide click here


Related Products

Product Support

Help Desk support

Help Desk support

A team is available to answer phone or email requests.

System Maintenance, Repair and Upgrades

System Maintenance, Repair and Upgrades

A full repair and maintenance facility is available; our dedicated technicians repair and service hundreds of systems per year.

Dedicated Spares and Accessories

Dedicated Spares and Accessories

Oxford Instruments Direct - Cryospares offers an extensive range of cryogenic spares, magnet spares, accessories and consumables - with a fast and efficient service, expert support and rapid delivery of products world-wide.

Extended Warranty

Extended Warranty

Extended warranty and PM including parts and labour. This contract allows you to safeguard your investment with complete peace of mind.

Mercury Support

Mercury Support

Support website for customers using MercuryiTC temperature controller and MercuryiPS magnet power supply.

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