GM Cryo-cooler Liquid Nitrogen Generator 20L/day On Site LN2 Supply for Labs
- Model
- LNS20A
Item specifics
- Liquid Nitrogen Output
- 20 liters per day
- Color
- White
- Patented
- Yes
- OEM
- Yes
- Warranty
- 1 Year
- Spare Parts
- On request
Review
Description
Product Introduction

LNS20A
Advanced all-in-one on site liquid nitrogen system powered by GM Cryo-cooler Technology
20
L/Day50
L Dewar<60
dBA10''
HMI
Next-Generation Liquid Nitrogen Generator Powered by GM Cryo-cooler
In the global market for on site liquid nitrogen generators, the GM (Gifford-McMahon) cryo-cooler is the dominant technology, accounting for over 95% of sales. Prized for its stable refrigeration performance based on the principle of gas adiabatic expansion, GM cryo-coolers are essential in critical fields like NMR, quantum communication, medical care and semiconductors.
Based on this advanced technology, Scala developed LNS20A liquid nitrogen generator with a daily output of 20 to 50 liters, offering a versatile solution adaptable to various user scenarios.
Product Details

Design Philosophy
Modern Industrial Appearance: Simple and clean white color scheme built with sturdy composite material, providing protection and durability.
Interface and Controls: 10'' colored Siemens® HMI with power indicator and emergency stop designed for easy access and operation.
Mobility: Mounted on FOOT MASTER® castors allows easy movement, facilitating its relocation as per requirements.
Ergonomic Reference: Human-centric design considerations for interfaces or access points with 1750mm height.
Lifting Holes: Provide secure anchor points to prevent slippage or imbalance during tranporation and installation.
Gifford-McMahon (GM) Cryocooler
High Efficiency Refrigeration: High thermodynamic efficiency makes it quickly reaches to the 77K low temperature for nitrogen gas liquefication.
Compact and Portable: The cold head is designed compact, occupying small space, which allows Scala liquid nitrogen generator overall in small footprint.
Reliable Operation: With mature technology for decades, it has high reliability and can be used in industrial and scientific research scenarios while keep stable performance.
Convenient Maintenance: Phase - adjusting device in the cryocooler reduces refrigeration performance caused sealing ring which greatly extends the maintenance cycle and service life.
CE & UL Certified: GM cryocoolers have been proved reliable and safety throughout the world


Vacuum Insulated Dewar
Mounted Struture: The vertical dewar mounted by cryocooler at the top significantly improves the liquefication performance.
Lower LN2 Vaporization: The cold head at the top keeps the liquid nitrogen at liquefication temperature, reducing the waste caused by evaporation.
Maintenance Free: Lifespan more than 10 years, which means no need for replacement throughout its entire life cycle.
Super Large Volume: Built-in 50 liters volume dewar that can meet most using senarios without external LN2 tanks.
Product Specifications
Machine Model: LNS20A
Liquid Nitrogen Output | 20 liters per day |
Liquid Nitrogen Purity | 99.5-99.9% |
In-built Dewar Volume | 50 Liters |
Air Compressor | Oil-free |
Nitrogen Generator Type | PSA Nitrogen Generator |
Cryo-cooler Type | Gifford-McMahon (GM) cryocooler |
Cooling Type | Air Cooled |
Voltage | 220V/1Ph/50Hz |
Controller | PLC |
PLC Brand | Siemens |
Screen | Color 10'' HMI |
Noise | <60 dB(a) @ 1 meter |
Automatic Running | Yes |
Automatic Standby | Yes |
Liquid Nitrogen Dispensing | Touch Screen Dispensing |
WiFi Connection | Yes |
Remote Control | Yes |
Lot Function | Yes |
Dimension | 150x75x175cm |
Weight | 500kg |
Cooling Water Requirement | No |
Place of Origin | Hangzhou, China |
Mobility | Yes |
Lead Time | 8 Weeks |
Machinery test report | Yes |
Quality Assurance | Yes |