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Cryojet is a cold nitrogen gas flow system that enables X-ray crystallography / XRD to be performed at temperatures down to 90 K. Once cold, samples are held at a stable, controlled temperature for the duration of the measurement.
- Avoid sample damage due to heating
- Observe phase transitions
- Measure LN2-frozen biological samples
5 top reasons to buy the Cryojet...
- Choice of wide temperature ranges
- 90-300 K with CryojetXL
- 90-490 K with CryojetHT
- No nozzle icing or blocking - unique dual nitrogen-flow technology provides shielding of the cold jet
- No need for a dry air supply, line drier or moisture trap
- Compact design and quiet operation - no pumps or compressors required, saving space and avoiding mechanical noise
- No moving parts means minimal maintenance
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Specifications
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System components/options
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Operation
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Applications
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Images
| Temperature range |
90-300 K |
90-490 K |
| Temperature stability |
± 0.1 K |
| Gas flow range |
0 to 10 litres/minute (gas at STP) |
System components
- Cryojet cold head connected by 1.5 m flexible stainless steel line to a rigid storage dewar leg
- Rigid support stand fitted with 3-axis XYZ positioning stages and variable angle tilt adjust for positioning the Cryojet head
- Cryojet Controller electronic control unit
- Independent rate settings for sample and shield flows
- Variable set point temperature
- Full 3 term PID automated set point temperature control
- Continuous display of sample gas temperature, sample gas flow rate and shield gas flow rate
- RS232 serial port interface; optional GPIB (IEEE-488) interface
- Oxford Instruments’ Object Bench software package for remote operation and instrument data logging
- 75 litre capacity liquid nitrogen storage dewar
- Cryojet alignment tip for precise cold jet alignment to sample position
Options
- Autofill for liquid nitrogen dewar to provide automatic nitrogen dewar replenishment during long-term use
- 3 m liquid nitrogen transfer line
- 160 litre nitrogen dewar
- Wheeled dewar base for ease of movement around the laboratory
- Electronic liquid nitrogen level meter and probe
- RS232 or GPIB cables for remote operation of Cryojet Controller
- The leg of the Cryojet is inserted into liquid nitrogen in a storage dewar
- Liquid nitrogen is evaporated using a simple heating element at the tip of the leg; this generates a flow of nitrogen gas
- The gas passes along two flow paths (flexible lines) to the Cryojet head; one of these is for the sample (cold gas) and one for the annular shield (warm gas)
- A heat exchanger in the Cryojet head delivers cold nitrogen gas at constant temperature to the sample
- The second flow of dry nitrogen gas is generated in the same way but is heated to room temperature in the Cryojet head. This is directed to the nozzle where it forms an annular gas jet around the cold flow. This shields both nozzle and sample to prevent ice accumulation
- The Cryojet Controller powers the heaters in the dewar and Cryojet head. The sample temperature and gas flows are controlled from the front panel or via a standard RS232 interface
- The Cryojet head is supported by a fully flexible translation stand to ensure that the nitrogen gas jet is positioned accurately with respect to the sample
- The storage dewar is held at atmospheric pressure to permit liquid nitrogen refills with minimal disruption to the jet temperature.