85℃ 85% RH Shelf life testing Benchtop Environmental Chamber

When it comes to evaluating product stability, shelf life testing at 85 ℃ and 85 % RH has become a widely recognized accelerated aging method. These conditions replicate harsh tropical climates and speed up degradation reactions, enabling manufacturers to predict long-term product performance in weeks rather than years. Whether you are testing electronic components, pharmaceuticals, or packaging materials, controlling both high temperature and high humidity is essential for reliable data.

LIB's Benchtop Environmental Chamber is specifically engineered for these demanding tests. Compact yet powerful, it provides precise control, repeatable conditions, and compliance with international standards. By combining advanced PID controllers, robust stainless-steel construction, and a wide humidity span, LIB ensures accurate 85 ℃ / 85 % RH shelf life testing in any laboratory.

Shelf life testing at 85 ℃ / 85 % RH is one of the most common methods used to predict how long a product will last under harsh conditions. Instead of waiting years to see how heat and moisture affect a material in real life, manufacturers can use this accelerated aging method to get results in a much shorter time. This approach is widely used in industries such as electronics, pharmaceuticals, packaging, and automotive, where product reliability is critical.

The test is guided by international standards such as IEC 60068-2-78 (Damp Heat, Steady State) and JEDEC JESD22-A101 (Steady-State Temperature Humidity Bias Test). Both standards describe how products should be exposed to high humidity and high temperature for a set period to check their durability. These standards ensure that the results are not only accurate but also accepted worldwide by regulators, suppliers, and customers.

Inside the benchtop chamber, temperature control is achieved through advanced heating elements. The chamber maintains a steady 85 ℃, with very small variations: only ± 0.5 ℃ fluctuation and ± 2.0 ℃ deviation from the setpoint. This level of precision ensures that all samples experience the same heat stress, making results trustworthy and repeatable.

For humidity control, the chamber uses a steam-based humidification system that keeps the environment at exactly 85 % RH, with a maximum deviation of only ± 2.5 % RH. This high accuracy is important because even small changes in humidity can significantly affect how fast corrosion or polymer breakdown occurs.

To avoid uneven test conditions, the chamber uses centrifugal fans for uniform circulation. These fans move air consistently across the entire test space, eliminating hot or wet spots. Without this airflow system, some samples might age faster or slower than others, leading to unreliable results.

By combining precise temperature control, stable humidity levels, and even air circulation, the benchtop chamber ensures that every sample undergoes the same accelerated stress. This produces predictable shelf life curves that help manufacturers estimate how long products will remain safe, reliable, or effective under real-world conditions. Whether it is testing how a medical coating resists moisture, how an electronic chip survives in tropical climates, or how packaging protects its contents, the chamber provides results that are both practical and scientifically valid.

Standards Compliance

The chamber is designed to support accelerated life and reliability testing according to:

IEC 60068-2-78 – Damp heat steady state.

JEDEC JESD22-A101 – Humidity bias tests for semiconductors.

ISO 16750 – Environmental conditions for road vehicles.

IEC 61730 – Weathering tests for photovoltaic modules.

Temperature & Humidity Control

Temperature Range: –70 ℃ to +150 ℃, programmable in 0.1 ℃ increments.

Humidity Range: 20 % to 98 % RH.

Stability: ± 0.5 ℃ fluctuation, ± 2.0 ℃ deviation.

Humidity Precision: ± 2.5 % RH.

Ramp Rates: Heating at 3 ℃/min, cooling at 1 ℃/min (customizable to 20 ℃/min).

Structural Design

Interior: SUS 304 stainless steel, corrosion-resistant and easy to clean.

Exterior: A3 steel with epoxy coating for durability.

Insulation: 100 mm polyurethane foam minimizes energy loss.

Sealing: Silicone rubber door gasket with concave-convex structure ensures airtight conditions.

Intelligent Control System

7-inch Touchscreen Controller: Stores up to 120 programs with 100 steps each.

Remote Monitoring: Ethernet and USB connectivity for real-time logging and report export.

Multi-Language Interface: English, Chinese, and other languages for global teams.

Safety Protections: Over-temperature, power failure, and water-level interlocks.

Cable Hole	Controller

Compact Efficiency

Model Example: TH-50 Benchtop Chamber

Dimensions: 820 × 1160 × 950 mm.

Temperature Range: –86 ℃ to +150 ℃.

Humidity Range: 10 % to 98 % RH.

Noise Level: ≤ 60 dBA, quieter than an office printer.
This design saves lab space while delivering full environmental control.

Q1: Can the benchtop chamber reach 85 ℃ / 85 % RH continuously?
Yes. The chamber is engineered for long-term damp heat operation in compliance with IEC and JEDEC standards.

Q2: Does it include high/low water level indicators?
The benchtop version uses a top water tank with manual filling to prevent overflow. Indicator lights are not included, but the system ensures safe and stable operation.

Q3: Can it be customized for faster temperature changes (e.g., 10 ℃/min or 20 ℃/min)?
Yes. Standard rates are 3 ℃/min heating and 1 ℃/min cooling, but non-standard customization can achieve up to 20 ℃/min.

Q4: Is automatic water inlet available?
Benchtop chambers rely on manual filling for safety, but floor-standing models support automatic water supply.

Q5: What warranty and support does LIB provide?
Every chamber comes with a 3-year warranty and lifetime support, including spare parts, on-site repair, and global shipment of replacement components.

LIB offers a 3-year warranty and lifetime service. Any issues that cannot be resolved during the warranty period will be replaced free of charge. 24/7 English-speaking after-sales team. Fast shipping within 7-15 days.

With precise 85 ℃ / 85 % RH control, international standards compliance, and compact benchtop design, LIB chambers deliver reliable accelerated aging data for diverse industries.

Contact LIB today to explore how our Benchtop Environmental Chamber can streamline your shelf life testing and ensure product reliability worldwide.