K4: Cryo Stages & Preparation Systems for SEM

KQUORUMLOG - k4add2



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Quorum Technologies own the Polaron brand and in early 2006 they also purchased Emitech. ProSciTech is now the sole distributor for these three brands in Australasia, south of Singapore. In time, the instrument range may be rationalised, but at present all competing products of these brands are available and featured on our site. Some additional data may be available from www.quorumtech.com.




Warranty: Quorum Technologies offer a standard 12 months warranty on all instruments. This can be extended to 3 years by filling in and returning the registration form. Pumps are excluded from the extension.
KE3500 - K4add1



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KPP2000 and KPP2000T CRYO-SEM PREPARATION SYSTEM standard and high vacuum

Cryo preparation techniques for Scanning Electron Microscopy (SEM) have become essential for the observation of wet or 'beam sensitive' samples. Using such techniques removes the need for conventional preparation techniques, such as critical point drying or freeze-drying, and allows observation of the sample in its natural, hydrated state. Cryo-SEM is also a very rapid technique, typically only a few minutes.


The KPP2000 cryo-SEM series is the result of many years experience of cryo techniques and vacuum and coating technologies. The instrumentation is logical, easy to understand, simple to use and maintain and will give high quality results from a wide range of samples. The system is designed to ensure that the vacuum in all three areas is optimally clean and that samples risk minimal exposure to contamination.


Sample preparation: The sample is rapidly cooled and transferred under vacuum to the cold stage of the preparation chamber, which is mounted onto the SEM chamber. The preparation chamber is pumped either with a rotary pump (KPP2000 cryo-SEM) or by a specially designed turbomolecular pumping system (KPP2000T cryo-SEM). The sample can be fractured, etched to reveal greater detail and coated with metal by sputtering or with carbon by evaporation. Finally, the sample can be loaded under vacuum into the SEM chamber where it is easily located on a cold stage specifically tailored to the SEM. At all stages of the procedure the sample is maintained at a safe temperature of lower than -140°C.


Features:
  • Easy to use
  • Rapid cryo transfer
  • Easy to maintain
  • High resolution coating system
  • Fully integrated up-gradable design
  • Highest levels of vibration isolation
  • Comprehensive cold trapping
  • Independently cooled and controlled SEM anti-contaminator
  • Standard (KPP2000 cryo-SEM) or high vacuum (KPP2000T cryo-SEM) models
  • Optional vacuum isolated SEM dewar for low vacuum work
  • Compact ergonomic design


Additional Information about the Cryo-SEM preparation system

Link to Quorum Technologies

KPP2000   Cryo-SEM preparation system   ask
KPP2000T   Cryo-SEM preparation system, high vacuum   ask
KPP2000B, k4add2000 - KPP2000
[click to enlarge]
KPP2000

KPP2000, k4add2000 - KPP2000 Cryo-SEM fitted on a JEOL 6490 SEM
KPP2000 Cryo-SEM fitted on a JEOL 6490 SEM

KPP2000A, k4add2000 - Cold stage viewed through loading port
Cold stage viewed through loading port



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K25X COOLING STAGE for ESEM, VP, EP and SEM

The Emitech K25X is a Peltier Driven Cooling Stage for SEM primarily VP & ESEM. It allows the stage to be cooled to sub zero temperatures for samples, which may be sensitive at ambient temperature, subject to beam damage, or may be sublime at ambient temperatures.

The Cooling Stage is located on the existing SEM Stage, and is designed to accept the standard range of stubs used with the SEM.

The Cooling Stage on the SEM Stage has secondary cooling via a liquid cooling circuit, through a ‘spare’ access port on the SEM, to the external heat exchanger unit, which is fully vacuum, isolated from the SEM chamber. This arrangement allows the majority of the x,y,z and tilt features to be maintained to an effective operating level.

The system is self-contained and employs a small power supply and temperature control system, the unit is supplied from standard supply socket.

The major parts of the system can be left in situ, and the Cooling Stage is very easily removed when reverting to ‘normal’ use.

System Items:
  • Peltier Cooled Stage and secondary liquid cooling
  • Vacuum Interface Port with Integral Electrical Lead Through for Peltier Supply, cooling and Temperature Monitoring
  • Optional chiller for cooling circuit (SEM cooling water or ambient water flow may be used).
  • Control Unit with Digital P.I.D. (Proportional, Integral, Derivative) Control, with SET Point Input Temperature and MEASURED Temperature Display
  • Low Voltage Ultra smooth dc Power Supply for Peltier Drive.
  • K25X Available for any Hitachi, Leo, Joel or FEI SEM (Other SEM vendors also available). Keypad and dual display for temperature control and display, Simultaneous display of Actual and Target temperatures, Vacuum Interface plate with all connections, Dual Microprocessor Control.


Features:
  • Temperature range -35°C to 75°C
  • Ambient to -25°C in 3 minutes
  • Can be used with all leading SEMs – specific interface plate supplied
  • Display of actual and target temperatures
  • Small footprint of control unit

Benefits:
  • Versatile system for use with VP/EP & ESEM
  • Rapid cooling of samples
  • Versatile system
  • Easy to see when system is ready
  • Compact unobtrusive system

Specifications of the K25X VP/EP & ESEM Cooling Stage:
  • Stage Temperature Control Range - +70°C to -30°C Resolution +/- 1°C
  • Typical Operating Temperature - -25°C within 3 minutes from ambient +25°C
  • Temperature display Resolution - 0.1°C
  • Temperature stability - 0.2°C
  • Control Unit Overall Dimensions - 137mm H x 235mm W x 260mm D. Complete with Set of 1 Metre interconnecting leads, and mains Supply lead
  • Sample Size - Normal Range of Specimen Stubs, Normally to 25mm Max. Dia.)
  • X,Y Normal Stage - Movements Maintained
  • Tilt - Normal Movement Maintained for X Ray Analysis (Typically to 45°)
  • Working Distance - Variable +/- 25mm
  • Rotate - Greater than 180°

Services
  • Electrical Supply - 230 Volts or 115 Volts 50/60Hz, Single Phase, 5 Amp max.


Optional Accessories
  • E4860 /240V - Recirculating heater/chiller 0.2HP (400W) + pressure pump
  • E4860 /110V - Recirculating heater/chiller 0.2HP (400W) + pressure pump

K25X SEM cold stage ask stock?
K25X
[click to enlarge]
K25X



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