LGJ-20 Lab Freeze Dryer


The LGJ-20 laboratory freeze dryer features floor type that capable of install a wide range of accessories for freeze drying recipe development and advanced research. Condenser temperature available in -55C and -80C, drying chamber can select standard, stoppering and manifold type, shelves optional with electric heating and temperature up to +60C.

Technical Details

The Vekuma LGJ-20 laboratory freeze dryer is floor type, a variety of accessories can be installed to be a versatile scientific freeze dryer such as shelves heating, vacuum control, eutectic point detector etc.

LGJ-20 Laboratory Freeze Dryer
Installed LGJ-20 Laboratory Freeze Dryer
LGJ-20 Laboratory Freeze Dryer
LGJ-20 Laboratory Freeze Dryer with Heated Shelves

Base Unit: Powder coated steel exterior, with wheels for easy to move. An upright stainless steel ice condenser is inbuilt, the condenser is chilled by coolant direct expand and is allowed for raw material pre-freezing. A wide range of accessories can be connected to the ice condenser to expand freeze dryer functions. Lateral of base unit has vacuum port, vacuum release valve and water drain valve. Freeze dryer power cable and vacuum pump power plug is located on rear side of base unit.

Control System: A 7” touch screen HMI is mounted on the freeze dryer base unit, it real-time displays condenser temperature, product temperature and vacuum degree. 3 large buttons on touch screen bottom are use to control compressor and vacuum pump working and condenser defrosting. Sub-pages include debugging interface of system setting and sensors calibration, real-time drying curve and data downloaded.

Drying Chamber: The drying chamber available in 6 selections, from bulk to manifold, to enable products dried in trays, vials, ampoules, flasks and other glass bottles.

Vacuum Pump: A 2-stage oil sealed rotary vane vacuum pump is included in the standard offer. Vacuum pump connects to freeze dryer by a hose and a pair of tri-clamp.

Technical Parameters

Model LGJ-20 (-55C) LGJ-20 (-80C)
Condenser 4Kgs 5Kgs
Condenser Temp. -55C -80C
Size (W/O Chamber) 580*500*720mm 770*550*720mm
Weight 65Kgs 100Kgs
Voltage 110V/220V 110V/220V
Power Install 600w 1180w

Standard Features

  • Mobile floor type.
  • Microprocessor and touch screen based controller, HMI displays system working status and key parameters.
  • S/S upright ice condenser inbuilt freeze dryer base unit.
  • Smooth wall type ice condenser.
  • 1 compressor for -55C version, 2 compressors for -80C version.
  • Air cooled refrigeration system.
  • Side mounted defrost water drain valve.
  • 2-stage oil sealed rotary vane vacuum pump i supplied.
  • Vacuum pump and freeze dryer connect by a hose and tri-clamp.
  • Side mounted vacuum port.
  • Side mounted vacuum break valve.
  • Rear mounted vacuum pump power socket.
  • 6 selections of drying chamber, standard, stoppering and manifolds.


  • Standard drying chamber.
  • Stoppering drying chamber.
  • Standard drying chamber with 8 manifolds (for flask).
  • Stoppering drying chamber with 8 manifolds (for flask).
  • 24 or 48 manifolds rack (for ampoules).
  • 8, 12, 16 or 24 manifolds rack (for flasks).
  • Rubber valve for round bottom flask.
  • Rubber valve for wide neck flask.


  • S/S316L condenser.
  • PTFE coated condenser.
  • S/S316L shelves and trays.
  • Heated shelves.
  • Dry vacuum pump.
  • Vacuum adjustable.
  • Eutectic point testing package.


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