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Achieve UL 2431 Compliance Instantly with LIB Industry’s High-Precision CO2 & SO2 Environmental Chamber

Oct 11 2025

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When your products must withstand industrial CO2 and SO2 exposure, even minor deviations in gas concentration or temperature can compromise test results—and ultimately, product safety. Many labs struggle with fluctuating SO2/CO2 levels, uncontrolled humidity, and inconsistent temperature, leading to unreliable data and repeated testing.

LIB industry solves this challenge with its high-precision CO2 and SO2 environmental chamber , designed for UL 2431 compliance. With stable temperature control, precise gas dosing, and full sample compatibility, LIB industry ensures repeatable, standards-compliant exposure—eliminating guesswork and safeguarding your test results from day one.

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Precision CO2 & SO2 Environmental Chamber Built for UL 2431 Industrial Atmosphere Testing

Meeting UL 2431 Table 5.2 standards requires continuous exposure of samples to 1% SO2 and 1% CO2 for 30 days at 95 ±3°F (35 ±1.7°C), with water maintained at the bottom to replicate industrial moisture conditions. LIB Industry’s CO2 & SO2 environmental chamber achieves these parameters with exceptional accuracy:

· Temperature Control: 35 ±1.7°C (95 ±3°F) with ±0.5°C stability

· Gas Concentration Accuracy: SO2 1% ±0.05%, CO2 1% ±0.05%

· Humidity Simulation: Water maintained at chamber bottom for realistic industrial conditions

· Continuous Automated Operation: 30-day testing without manual intervention

· Sample Compatibility: Metals, plastics, coatings, electronics, and assemblies

Advanced sensors and uniform gas circulation ensure consistent environmental conditions for reliable toxic gas testing and repeatable UL 2431 compliance results.

Why LIB Industry’s CO2 & SO2 Chamber Outperforms Competitors

LIB Industry combines precision engineering, operational efficiency, and safety in one integrated SO₂ corrosion test chamber:

· Ultra-Precise Control:PT100 Class A temperature and humidity sensors (±0.001 °C) and high-accuracy SO2 analyzers (±0.1% FS) provide real-time monitoring.

· Industrial-Grade Construction: SUS316 stainless steel workroom resists corrosion. Glass fiber reinforced interior and A3 steel exterior with electrostatic coating ensure long-term durability.


CO2/SO2 sensor	SUS 316 workroom

· Multi-Gas Compatibility: Supports sequential testing of CO2, SO2, NOx, HCl, and other gases without hardware changes.

· Automated Exhaust & Gas Neutralization: SO2 is fully absorbed in NaOH solution before discharge, meeting environmental safety standards.


Muti gas cylinders	NAOH tank for gas treatment

· Safety Design: Dual-sealed door with electromagnetic locks prevents leakage; emergency unlock ensures safe access.

· Data Logging & Remote Monitoring: PID-programmable touch controller supports up to 120 program profiles and 100 logic steps. Records temperature, humidity, and gas concentrations with real-time alarms for abnormal conditions.


Electromagnetic locks	Data Logging & Remote Monitoring

This integrated design ensures labs can perform toxic gas testing confidently, achieving reliable and repeatable UL 2431 compliance results.

Complete Toxic Gas Testing Solutions Beyond CO2 and SO2

LIB industry offers comprehensive noxious gas environmental chambers, capable of handling single gas, multi-gas, and ozone testing. This allows laboratories to cover all industrial atmosphere simulation needs with a single trusted partner.

Chamber Type	Gas Capability	Temperature Range	Humidity Range	Image
CO2 / SO2 Gas Chamber	Single or Mixed Gas	15 ℃ ～ 80 ℃	30–98% RH
Ozone Test Chamber	O3 only	0–100°C	30–98% RH
Multi-Gas Test Chamber	CO2, SO2, NOx, Cl2	15 ℃ ～ 80 ℃	30–98% RH

Whether you need single-gas testing or complex multi-gas exposure, LIB industry’s flexible configurations ensure precise, reproducible results every time.

FAQ for CO2 / SO2 Corrosion Testing

Q1: How does LIB prevent gas leakage during testing?

A1: Dual-sealed doors and pre-shipment pressure testing ensure no leakage. For additional safety, using the chamber in a dedicated, sealed room is recommended.

Q2: How is discharged SO2 neutralized?

A2: Exhaust gas passes through NaOH solution for complete absorption before release. This guarantees emissions meet safety standards. NaOH solution should be replaced every six months.

Q3: How long does the sealing rubber last?

A3: The corrosion-resistant rubber maintains performance for up to five years before replacement is recommended.

Q4: Can multiple gases be tested sequentially?

A4: Yes, CO2, SO2, NOx, HCl, and other gases can be switched without hardware changes, maximizing lab efficiency.

Q5: Is remote monitoring available?

A5: Yes, temperature, humidity, and gas concentrations are accessible remotely with alarms for abnormal conditions.

LIB Industry Trusted Experience and Rapid Response for UL 2431 Testing

With over 16 years of experience designing precision environmental test solutions, LIB Industry supports electronics, automotive, coatings, and materials labs worldwide. Advantages include:

· Tailored testing protocols based on sample type and volume

· Full compliance with UL 2431 2nd edition standards

· Ready inventory and rapid deployment

Contact LIB Industry at inquiry@libtestchamber.com to receive a customized solution and exclusive quotation within 1–3 hours. From single prototypes to full production batches, LIB Industry guarantees precision, reliability, and peace of mind—ensuring confident UL 2431 compliance every time.

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