LIB Low Temperature Test Chamber Meet EU’s New GWP Regulations

The EU's updated Global Warming Potential (GWP) regulation (EU 2024/537), effective January 1, 2024, mandates a maximum refrigerant GWP of 150 for all industrial equipment entering the EU. This policy accelerates the global shift toward carbon neutrality and challenges the environmental simulation industry to innovate. As a leader in the field, LIB Industry has proactively upgraded its full product line with sustainable refrigerant solutions, ensuring compliance with the EU's stringent standards.  

GWP quantifies a refrigerant's global warming impact relative to CO₂. Previously common refrigerants like R404A (GWP=3922) and R23 (GWP=14,800) were banned by the EU in 2014 due to high environmental risks. The new 150 GWP cap aligns with the EU’s goal to cut greenhouse gas emissions by 55% by 2030 (vs. 1990 levels), pressuring industries to adopt low-carbon alternatives. High-precision test chambers, critical for industries like aerospace and automotive R&D, face urgent upgrades to meet these requirements.

While refrigerants like R449A (GWP=1396) remain legal, their GWP still exceeds the new limit. Others, such as R508B(GWP=13,504), require complex leakage controls for ultra-low-temperature applications. LIB emphasizes that compliance demands more than simple refrigerant swaps—it requires holistic redesigns of cooling systems and energy efficiency optimization.

LIB has engineered innovative refrigerant blends to achieve temperatures below -70°C while slashing energy consumption. Its temperature and humidity chambers and thermal testers already meet the ≤150 GWP threshold, with successful field tests in Europe. The company's approach balances performance, safety, and sustainability, future-proofing clients against evolving regulations.

LIB Temperature & Humidity Chambers: Efficient, Reliable, and Eco-Friendly

In response to the EU's new GWP 150 limit, LIB has fully upgraded the refrigeration systems in its temperature and humidity chambers. These systems not only meet the low-GWP requirement but also deliver optimized performance and energy efficiency.

High-Efficiency Cooling with Precise Control

Wide Low-Temperature Range: Innovative refrigerant blends allow temperatures below -70°C, ensuring reliable ultra-low temperature testing. Accurate Temperature Control: Combined with PID control and high-precision PT100 sensors, temperature stability reaches ±0.5°C and humidity is maintained within ±2.5% RH. Fast Response: The refrigeration system supports rapid heating and cooling, completing a -40°C to +85°C cycle in under 45 minutes, significantly reducing test times.

Energy-Saving and Sustainable Design

Eco-Friendly Refrigerants: All chambers use ≤150 GWP refrigerants, balancing environmental safety and high performance. Energy-Efficient Engineering: 100 mm polyurethane insulation, variable-speed compressors, and adjustable fans reduce energy consumption by 20–30%, lowering lab operating costs. Water Reuse System: Built-in humidity systems recycle condensate, reducing water consumption by up to 70% while extending humidifier lifespan.

Stable and Reliable Performance

• Uniform Conditions: Multi-directional centrifugal fans maintain even temperature and humidity, keeping internal variation under 1.5°C so all samples experience the same environment.

• Durable Construction: SUS304 stainless steel interior and A3 steel exterior with protective coating resist corrosion and impact, while remaining easy to clean.

• User-Friendly Operation: A color touchscreen with multi-language interface stores up to 120 test programs with 100 steps each, allowing quick program switching without reconfiguration.

Touch screen controller Holds up to 120 test programs with 100 steps each, making it well suited for complex multi‑stage profiles such as temperature–humidity shock or soak cycles.	The compressor The compressor rapidly removes heat from the chamber interior, achieving a cooling rate around 1 °C / 5 °Cper minute.	Robust Anti-Corrosion Workroom The chamber's interior is built from SUS304 stainless steel, offering outstanding resistance to heat and corrosion for long-lasting performance.	Integrated Power Access hole Allows test specimens to stay powered during experiments, enabling performance evaluation under varying temperature and humidity. Standard 50 mm diameter; quantity and size customizable.

Technical Highlights of the LIB Temperature & Humidity Chambers

Temperature & Humidity Chambers
Temperature range	-20℃ ～+150 ℃
Low type	A: -40℃   B:-70℃   C -86℃
Humidity Range	20%-98%RH
Temperature deviation	± 2.0 ℃
Heating rate	3 ℃ / min
Cooling rate	1 ℃ / min
Controller	Programmable color LCD touch screen controller, Multi-language interface, Ethernet , USB
Refrigerant	R404A, R23
Exterior material	Steel Plate with protective coating
Interior material	SUS304 stainless steel
Standard configuration	1 Cable hole (Φ 50) with plug; 2 shelves
Timing Function	0.1~999.9 (S,M,H) settable

1. Full Closed-Loop Control: Every LIB chamber features a fully closed-loop control system that continuously monitors key parameters, including temperature, humidity, compressor performance, and airflow. This real-time feedback ensures that the chamber maintains stable conditions over long testing periods. Whether running a few hours or several days, the system automatically compensates for fluctuations, providing highly reliable and repeatable results.

2. Intelligent Safety Protection: Safety is built into every chamber. Advanced alarms detect overtemperature, overhumidity, refrigeration faults, or even if the door is accidentally opened during a test. These safeguards protect both the equipment and your test data, preventing interruptions or damage. For laboratories conducting critical experiments, this intelligent protection ensures peace of mind and consistent data integrity.

3. Flexible Capacity: LIB chambers are designed to adapt to a wide variety of test specimens. Adjustable shelving, sliding rails, and hanging fixtures allow easy customization for small, delicate electronic boards or large automotive components. Users can quickly reconfigure the interior to match changing testing needs, making the chambers highly versatile for multiple industries.

4. Uniform Conditions Across All Samples: Multi-directional fans and optimized airflow design ensure that every corner of the chamber experiences the same environment. This prevents hot or cold spots, guaranteeing that both small and large samples are tested under identical conditions, which is crucial for precision experiments and quality assurance.

5. User-Friendly Operation: While packed with advanced technology, LIB chambers remain easy to operate. Intuitive touchscreen controls allow users to program complex temperature and humidity cycles, store multiple protocols, and monitor progress in real time. This combination of intelligence and simplicity makes it easier for engineers and QA specialists to focus on testing rather than troubleshooting equipment.

LIB's temperature and humidity chambers not only comply with the EU's ≤150 GWP regulation but also offer precise control, fast cycling, energy efficiency, and versatile configurations, providing reliable, repeatable results for R&D, quality assurance, and certification. From aerospace to automotive to pharmaceuticals, LIB chambers ensure every test is accurate, stable, and future-proof.

Ensure your lab stays compliant, efficient, and future-ready. Contact LIB Industry today to request a live demo, discuss customization options, or learn more about our sustainable, high-precision environmental test solutions.