What Is a Cold Trap Bath LB-20CTB?

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Why Is Cold Trap Bath LB-20CTB Used?

It is used to:

• Prevent vapor contamination in vacuum pumps

• Recover solvents efficiently

• Maintain stable vacuum conditions

• Improve process stability in low-temperature applications

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Product Snapshot

Attribute	Details
Product Name	Cold Trap Bath
Model Number	LB-20CTB
Temperature Range	−50 °C to −120 °C
Application	Vapor trapping & solvent recovery
Industries	Pharma, Chemical, Biotech, Research

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How Does Cold Trap Bath LB-20CTB Work?

Key Benefits 

• Ultra-low temperature vapor trapping (−120 °C)

• High solvent recovery efficiency

• Protects and extends vacuum pump life

• Supports continuous vacuum operations

• Reduces contamination and maintenance

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Typical Applications

• Rotary evaporation

• Freeze-drying (lyophilization)

• Vacuum distillation

• Moisture trapping in vacuum systems

• Chemical and pharmaceutical solvent recovery

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Industries That Use Labotronics LB-20CTB

• Pharmaceutical manufacturing and R&D

• Chemical processing laboratories

• Biotechnology research facilities

• Environmental testing labs

• Academic and research institutions

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Technical Specifications

Parameter	Specification
Temperature Range	−50 °C to −120 °C
Trap Volume	2 – 3.5 L
Cooling System	Refrigerant-based
Display	Digital
Power Supply	220 V AC
Weight	~12 kg

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Labotronics LB-20CTB vs Other Vapor Trapping Systems

Feature	LB-20CTB	LB-11CTB	Cryogenic Trap	Dry Ice Trap
Temp Range	−120°C	−100°C	−196°C	−78°C
Efficiency	Very High	High	Extreme	Moderate
Operation	Continuous	Continuous	Complex	Short-term
Use Case	Advanced labs	Standard labs	Specialized	Basic setups

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When Should You Choose Labotronics LB-20CTB?

Choose this model if you need:

• Ultra-low temperature vapor condensation

• High-efficiency solvent recovery

• Continuous vacuum system operation

• Stable performance in rigorous lab environments

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Best For vs Not Ideal For

Best For:

• High-performance laboratory setups

• Solvent-intensive processes

• Freeze-drying and advanced vacuum systems

Not Ideal For:

• Low-budget or short-term setups

• Basic evaporation tasks

• Applications not requiring sub −100 °C

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Frequently Asked Questions 

1. What is a cold trap bath used for?
   It condenses vapors from vacuum systems before they reach the pump to prevent contamination and enable solvent recovery.
   
   

2. What makes Labotronics LB20CTB different from standard models?
   It offers a lower cooling range down to minus 120 °C for more efficient volatile solvent trapping.
   
   

3. Can it be used with rotary evaporators?
   Yes it can be used with rotary evaporators, freeze dryers and vacuum distillation systems.
   
   

4. Does it improve vacuum pump lifespan?
   Yes it protects the pump from vapors and extends its lifespan.
   
   

5. How often should it be cleaned?
   It should be cleaned or defrosted after each cycle or when frost builds up.
   

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Why Choose Labotronics LB-20CTB Over Alternatives?

• Wider temperature range than standard cold traps

• Better solvent recovery efficiency

• More stable performance in continuous operations

• Compact design with high-performance cooling

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Internal Linking Opportunities

• Parent Category: Cold Trap Baths

• Related Products: Labotronics LB-11CTB, Cryogenic Trap LB-30CT

• Guides: Cold Trap Selection Guide

• Articles: Vapor Condensation Techniques

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Quick Summary