Cold Trap, Cryostat and Cryo-Trap Filling

Norhof LN2 auto-fill systems deliver reliable, hands-free liquid nitrogen cooling for cold traps, cryo-traps, and cryostats across scientific research, analytical laboratories, and industrial processes. Our microdosing technology ensures consistent temperature control while eliminating manual refilling, protecting sensitive equipment and maintaining experimental integrity.​

Applications:

 

Cold traps and cryo-traps find widespread use in diverse applications where vapor management is essential:

  •  – Freeze Drying and Lyophilization ​
  •  – Vacuum Coating and Thin Film Deposition
  •  – Gas Chromatography
  •  – Vacuum Ovens and Rotary Evaporators
  •  – High Vacuum Research
  •  – Cryostats: Precision Temperature Control for Advanced Research
  •  – Thermal Analysis
  •  – Microscopy and Imaging
  •  – Materials Science
  •  – Semiconductor Manufacturing​

 

 

LN2 auto-fill of a cold trap of Telstar LyoBeta Freeze Dryer

LN2 auto-fill of a cold trap of Telstar LyoBeta Freeze Dryer

The Norhof Auto-Fill Advantage

Manual LN2 filling presents significant challenges: temperature fluctuations during refills can compromise experiments, manual handling poses safety risks, and inconsistent nitrogen levels can lead to equipment damage or sample loss.​

Norhof auto-fill systems address these challenges through automated, precision delivery:

  •  – Continuous Unattended Operation: Automated filling from bulk storage eliminates the need for frequent manual refills, enabling overnight experiments and multi-day procedures without interruption.​
  •  – Consistent Temperature Stability: Microdosing technology maintains constant LN2 levels, preventing temperature fluctuations that occur with manual filling cycles.​
  •  – Enhanced Safety: Automated systems eliminate repeated personnel exposure to cryogenic liquids, reducing workplace hazards and improving laboratory safety.​
  •  – Reduced Nitrogen Consumption: Precise low-pressure delivery (max 300 mbar) minimizes waste compared to high-pressure systems, lowering operational costs.​
  •  – Equipment Protection: Consistent LN2 levels prevent warm-up events that could damage sensitive detectors, release trapped solvents, or compromise vacuum system integrity.​
  •  – Scalability: Systems accommodate various applications from small research cryostats to large industrial cold traps, with flexible connection options and custom configurations.​

System Integration and Reliability

Norhof LN2 auto-fill systems integrate seamlessly with existing cold traps, cryo-traps, and cryostats through standard connections or custom adapters. The systems operate from standard bulk LN2 storage vessels, automatically maintaining optimal fill levels through sensor-based control.​

Installation is straightforward, requiring minimal space and standard laboratory infrastructure. The plug-and-play design allows users to retrofit existing equipment without extensive modifications.​

Contact Norhof to discuss how our LN2 auto-fill solutions can enhance your laboratory operations, improve experimental outcomes, and reduce operational costs.