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Electron Microscopy Sciences

Equipment

arrow14Freeze Dryer and Turbo Freeze Dryer

PDF Downloadarrow14EMS 750 Freeze Dryer

EMS 750 Freeze DryerCross-sectional view of peltier cooled stageThe EMS 750 Freeze Dryer operates at rotary pump vacuum using a 'Peltier' Thermoelectric stage, with drying temperatures of the order of -60°C, with back-up water cooling at a nominal 15°C. Both the Temperature and the Timer can be pre-selected, and the drying cycle will be completed automatically.

Provision is made at the end of the drying cycle to allow the specimen to assume room temperature, or be subsequently warmed prior to embedding. Disposable desiccant containers are located in the preparation chamber to enhance the water vapor removal, and with a suitable container, the vacuumchamber can be utilized to prepare liquid nitrogen 'slush' for fast freezing.

Features

  • Thermoelectric cooling and heating.
  • Convenient to use cold stage.
  • Accurate temperature and time monitoring and control.
  • Automatic drying cycle.
  • Modular electronics.
  • Clean line design.
  • Polycarbonate safety shield.

Specifications

Instrument Case 450mm (W) x 350mm (D) x 175mm (H)
Work Chamber Borosilicate Glass 165mm (Dia.) x 125mm (H)
Weight 18Kg
Specimen Stage -60°C to +60°C
Vacuum Gauge ATM to 1 x 10-2-2 mbar
Temperature Controller & Monitor -90°C to +90°C
Display Resolution to 0.1°C
Timer 0-999 Hours
Supply 115 volts 60 Hz (12 Amp Max incl pump)
230 volts 50Hz (6 Amp Max incl pump)
Services Water Cooling at nominal 15°C
Vacuum Pump
(Recommended)
Complete with vacuum hose
and oil mist filter 85L/Min
Size 470mm (L) x 150mm (W) x 250mm (H)
Weight 20Kg

Ordering Information

91080 EMS 750 Freeze Dryer complete with accessories POR Quote
91005 Rotary Vacuum Pump 2,700.00 Add to Cart

Replacement Parts

91013 Glass cylinder 165mm (6")   175.00 Add to Cart
91014 "L" Gasket to suit 165mm ( 6") cylinder 1 pair 95.00 Add to Cart
91085 Desiccant Containers (set of 3)   10.00 Add to Cart
91086 Polystyrene Slushing Pot   POR Quote

Optional Accessories

91040 EMS 7640 Carbon Coating Attachment POR Quote

Technical Data sheet

For more information on Freeze Drying, please see Freeze Drying Principles.

PDF Downloadarrow14EMS 775 Turbo Freeze Dryer

EMS 775 Turbo Freeze Drier EMS 775 Turbo Freeze Dryer in Use with liguid nitrogenThe EMS 775 Turbo Freeze Dryer operates at temperatures down to -140°C and employs a Turbomolecular pumping unit, backed by a Rotary Vacuum pump. The lower temperatures are achieved by using a Liquid Nitrogen fed Cold Stage.

The pre-frozen specimens are admitted into the cooled stage of the drying chamber through a vacuum gate valve which interfaces to the specimen transfer chamber.

The system incorporates both Time and Temperature Control, and at the end of the drying period, the stage may be heated prior to specimen removal. The system also has facilities for purging with Nitrogen Gas.

For extended drying periods, an auto top-up device can be provided as an option to continuously 'fill' the chamber's liquid nitrogen dewar.

The option of a custom designed specimen freezing chamber to produce 'slushy' sub cooled liquid nitrogen is available which also interfaces to the specimen transfer chamber.

The option for a carbon or sputter coating attachment without breaking vacuum is available.

Features

  • Programmable multi-segment sequence control with 10 times and 10 temperatures.
  • Built-in penning head and gauge.
  • Liquid Nitrogen fed cold stage.
  • Vacuum gate valve to chamber.
  • Vacuum specimen transfer chamber.
  • Accurate time and temperature monitoring.
  • Modular electronics.
  • Clean line design.
  • Polycarbonate safety shield.

Specifications

Instrument Case 450mm (W) x 350mm (D) x 175mm (H)
Work Chamber
Plus
Stainless Steel Base
Borosilicate Glass
165mm (Dia.) x 125mm (H)
110mm (Dia.) x 115mm (H)
Weight 42Kg
Specimen Stage -140°C to +40°C
Temperature Monitor -140°C to +40°C
Sequence Controller 10 times and 10 temperatures
Timer 0 to 999 Hours
Vacuum Gauge Range 1 x 10-2 mbar to 1 x 10-7 mbar
Operating Vacuum 1 x 10-2 mbar to 1 x 10-5 mbar
Cooling By liquid nitrogen conductive cooling from 1 liter dewar fitted to the chamber of the unit.
Turbomolecular Pump 60 litres/Second(Ultimate vacuum 1 x 10-6 mbar)
Chamber Dewar 1 Litre Capacity
Supply 115 volts 60Hz (12 Amp Max incl pump)
230 volts 50Hz (6 Amp Max incl pump)
Vacuum Pump Complete with vacuum hose
and oil mist filter. 85L/Min
Size 470mm (L) x 150mm (W) x 250mm (H)
Weight 20Kg

Ordering Information

93123 EMS 775 Turbo Freeze Dryer complete POR Quote
91005 Rotary Vacuum Pump 2,700.00 Add to Cart
95126 Supply Dewar (25L) POR Quote

Replacement Parts

91013 Glass Cylinder 165mm (6")   175.00 Add to Cart
91014 "L" Gaskets to suit 165mm (6") 1 pair 95.00 Add to Cart
90032 Copper Discs 10/pack 250.00 Add to Cart

Optional Accessories

95128 EMS 170 Slushing Chamber POR Quote
95127 EMS 175 Auto Top Up Unit +Controller POR Quote
91040 EMS 7640 Carbon Coating Attachment POR Quote

Freeze Drying Principles

For more information on Freeze Drying, please see Freeze Drying Principles.

PP3010T Cryo-SEM Preparation System arrow12arrow12