Freeze Dryer ALPHA 2-4 LD+ (up to 4 kg - 2 compressors)

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ALPHA 2-4 LD+

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Details

Freeze Dryer ALPHA 2-4 LD+

SKU: ALPHA 2-4 LD+ | Up to 4 kg | 2 Compressors | -85°C | LDplus Display

The Martin Christ ALPHA 2-4 LD+ is a universal laboratory freeze dryer for routine applications. Its exceptionally low ice condenser temperature of -85°C allows drying of samples containing organic solvents such as alcohols, making it ideal for pharmaceutical, chemical, and biological research.

The LDplus (Lyo Display Plus) controller combines functionality with comfortable operation. The graphic LC display presents all essential process data at a glance, while self-explaining menu guidance in German, English, or French simplifies routine freeze-drying workflows.

LDplus Controller Features

• Graphic LC display with clear process data layout

• Ice condenser temperature, process time, section time, vacuum

• Self-explaining menu guidance (DE / EN / FR)

• Vacuum control for process time reduction (option)

• Product temperature via vapour pressure curve

• RS-232 interface for LyoLog LL-1 software (option)

Drying Configurations

Configuration	Details
Bulk Drying	5 unheated shelves Ø 360 mm — approx. 0.5 m² drying area
Vial Stoppering	2 or 4 shelves Ø 250 mm with sealing device
Flask Drying	Up to 24 round-bottom flasks with multi-port manifold
Other Vessels	Wide-neck filter bottles and ampoules supported

Technical Specifications

Parameter	Value
SKU	ALPHA 2-4 LD+
Product Name	Freeze Dryer ALPHA 2-4 LD+
Controller	LDplus (Lyo Display Plus) — graphic LC display
Ice Condenser Capacity	Max. 4 kg
Ice Condenser Performance	Max. 4 kg / 24 h
Ice Condenser Temperature	Approx. -85°C
Pre-Freezing Temperature	Approx. -50°C (inside ice condenser chamber)
Number of Shelves	5
Shelf Diameter	Ø 250 mm (stoppering) / Ø 360 mm (external)
Shelf Temperature	-50°C
Max. Drying Area	Approx. 0.5 m² (5 × Ø 360 mm shelves)
Round-Bottom Flask Capacity	Max. 24 pieces
Infrared Heater	No
Dimensions (W × D × H)	390 × 415 × 555 mm
Net Weight	65 kg
Power Supply	230 V, 50–60 Hz
Power Consumption	Approx. 1.84 kVA
Operating Temperature	10°C – 32°C

Additional Information

More Information
Infra-Red Heater	No
Ice condenser capacity	max. 4 kg
Ice condenser performance	max. 4 kg/24 h
Ice condenser temperature	Approx. -85°C
Shelf temperature when pre-freezing inside the ice condenser chamber	approx. -50°C
Max. shelf surface area when drying outside the ice condenser chamber (process B)	5 x 360 mm ø shelves. Approx 0.5 m2
Shelves	5
Shelves Temperature	−50°C
Shelves Diameter	ø 250 mm
Drying area	Approx. 0.5 m²
Drying in round bottom flasks	max. 24 pieces
Dimensions	390 x 415 x 555 mm
Net Weight	65 kg
Power Supply	230 V, 50 – 60 Hz
power consumption [W]	Approx. 1.84 kVA
Operating Temperature	10°C – 32°C

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