Digester for the food industry LMD-201

for environmental analysislaboratoryfor the pharmaceutical industry

Product Overview
The LMD-201 Kjeldahl digestion unit is a 20-position block digester for Kjeldahl nitrogen and protein sample preparation. It accepts 300 mL digestion tubes and operates from RT+5°C to 450°C with ±1°C temperature accuracy. Infrared graphite conduction heating and PID control deliver uniform temperature distribution and fast ramp-up (≈RT to 400°C in ~25 min). Corrosion-resistant components and air-duct/ceramic insulation reduce external surface temperature and extend service life.

Operation & Performance
Designed for analytical and QA/QC laboratories, the unit provides 25 preloaded digestion programs and up to 500 programmable methods with linear and curved heating ramps. Triple-stage filtration with condensate recovery limits acid emissions. A dedicated water-jet vacuum pump extracts acid vapors without lubricants or extra power. Integrated cooling rack, acid-resistant drip tray and quick-cooling features improve sample handling and throughput. Multiple protection systems (over-temperature, over-current, overheating, over-voltage) secure continuous operation.

Key Highlights

• 20-sample throughput with uniform graphite heating.
• Programmable: 25 preloaded programs; 500-method memory for repeatable workflows.
• Safety-focused: triple-stage filtration, condensate recovery, adjustable negative suction pressure, corrosion-resistant acid collection, multi-level protection.

Features

• 500 program memory capacity.
• Triple-stage filtration system with condensate recovery to reduce acid fumes.
• Dedicated water-jet vacuum pump for efficient acid vapor extraction without lubrication or electrical drive.
• Adjustable negative suction pressure to prevent acid overflow during digestion.
• Corrosion-resistant acid collection components to minimize chemical damage.
• Air-duct and advanced ceramic insulation for improved thermal efficiency and lower external surface temperature.
• Integrated sample cooling rack to accelerate post-digestion handling.
• Multi-level safety protections including over-voltage, over-current, overheating and over-temperature alarms.
• 25 preloaded digestion programs with customizable linear and curved heating profiles.

Applications

• Sample digestion for Kjeldahl nitrogen/protein analysis in food, feed, fertilizer, soil, water, pharmaceutical, environmental and agricultural laboratories.
• Supports quality control, regulatory testing, research and routine analytical workflows requiring programmable high-temperature digestion and repeatable preparation.

Technical specifications
Model: LMD-201
Digestion tube capacity: 300 mL
Temperature range: RT +5°C to 450°C
Temperature accuracy: ±1°C
Power supply: AC 220 V ±10%, 50 Hz
Power: 3.6 kW
Capacity per batch: 20 pcs/batch
Heating method: Infrared heating and high-purity graphite conduction
Heating insulation: Air-duct insulation technology with advanced ceramic insulation
Program memory: 500 stored methods; 25 preloaded programs with linear and curved ramps
Filtration: Triple-stage filtration with condensate recovery
Vacuum pump: Dedicated water-jet vacuum pump (acid vapor extraction)
Safety: Over-temperature, over-current, overheating, over-voltage protections
Cooling & handling: Integrated sample cooling rack, acid-resistant drip tray, quick-cooling rack
Dimensions (W×D×H): 515 × 458 × 730 mm
Package size (W×D×H): 930 × 630 × 660 mm
Net weight: 40 kg
Gross weight: 60 kg