Our top-loading Kelvinox®TLM is a high performance dilution refrigerator with a base temperature of less than 15 mK and cooling power of more than 400 µW.

  • Top-loading of the sample directly into the 3He/4He mixing chamber ensures good sample thermalisation, high stability of the thermal environment and guarantee of operation in high magnetic field
  • Multi-service, multi-user access: unique design which can be used with a range of sample probes such as a Swedish rotator or high frequency co-axial lines
  • Quick and easy sample change: no need to remove the mixture during sample change, giving quicker experiment turnaround times and reducing the risk of leaks
  • Non metallic sample environment - ideal for experiments such as solid state NMR when removing metallic material surrounding the pickup coil resonant circuit is key to accurate measurements. Typically, field sweeps of up to 2 T/min leave the temperature of the mixture unaffected

The Kelvinox®TLM is covered by US patent No. 6202439.


Base temperature

≤ 15 mK

Base temperature stability

± 1 mK

Maximum temperature

1 K

Continuous operation


Sample environment


Cooling power at 100 mK

≥ 400 µW

Cooling power at 120 mK

≥ 580 µW

3He / 4He mixture

Optional *

We are able to supply the 3He / 4He with the system. Customer can also use their own system.


Research areas


Experimental techniques


Quantum Hall Effect
Quantum dots
Single electron tunneling
Quantum computing

Hall effect
RF transport
High frequency conductivity

Solid State Physics

Heavy fermions systems
Metal insulator transition
Spin glass
Mesoscopic systems
Giant magnetic resistance

Specific heat
DeHaas-van Alphen Oscillations
Solid state NMR
Electrical resistivity
Neutron scattering


Low Tc superconductors
Quantum computing  
Josephson junctions
Flux vortices
Quantum initial phenomena

Electrical resistivity
Scanning spectroscopy(STM/AFM)
AC susceptibility

Astrophysics & Cosmology

Low temperature detectors Superconducting tunnel junctions
Ge bolometers

Electrothermal measurements
Voltage biased measurements
Low energy photon detection


Quantum Hall Effect
Voltage standards
Current standards

DC & AC low frequency transport and magnetic measurements
Single electron tunneling


System components / options

Every KelvinoxTLM is made up from three main components:

Dilution unit - providing ≥ 400 µW at 100 mK measured at the He mixture phase boundary.

Insert - featuring still pumping line, 1 K pot, diagnostic wiring and inner vacuum can.

Top loading probe - ease of access to samples with a range of experimental services.


Automation and control of your dilution refrigerator using the an automatic gas handling system:

All systems are delivered with an automatic gas handling system which enables complete operation of a dilution refrigerator using sophisticated software and virtual instrument drivers for National Instruments' LabVIEWTM.


  • PT100: 24-way copper/supercon loom wired to the mixing chamber
  • PT200: 2 x S1 co-axial cables wired to the mixing chamber
  • PT210: 4 x S1 co-axial cables wired to the mixing chamber
  • PT300: 2 x UT85-SS-SS coaxial cables wired to the mixing chamber
  • CAPV/CAP: Capillary line with or without valve
  • KELMSWR: Swedish rotator - manual
  • KELMSRWA: Swedish rotator - automation
  • CS100: ROTH1, 30 point calibrated RuO2 sensor to 50 mK
  • CS200: ROTH2, generic calibration RuO2 sensor
  • RB100: AVS47 resistance bridge with rf filtering, cables & IEEE interface
  • TS530: Temperature controller for use with AVS47 resistance bridge
  • IPC: Isobus Picobus converter
  • HTC: Helium cold trap
  • Transfer tube
  • TLMP3: Spare top loading probe, 34 mm access - tested with system
  • TLMP4: Spare top loading probe, 34 mm access - supplied untested at a later date
  • HE3F: 3He flow meter
  • VIN: Valves in pumping lines


Downloads & further Information


To download our Kelvinox product guide click here

To download our Kelvinox specification sheet click here

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The modular design of the Triton offers extensive configuration possibilities and flexible sample environments. Some of the options include integrated and remote motor PTRs; large sample space; integrated superconducting magnets up to 18 T; top and bottom sample loading into vacuum; extensive wiring and service options as well as vacuum tail sets, to suit any applications.

Product Support

Help Desk support

Help Desk support

A team is available to answer phone or email requests.

Installation and Service

Installation and Service

We can take care of the installation and maintenance of your product for complete piece of mind.

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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