Memmert HCP High-Temperature & High-Humidity Climate Chamber

Overview

The Memmert HCP High-Temperature & High-Humidity Climate Chamber is an engineered solution for precision environmental stress testing under rigorously controlled thermal and hygroscopic conditions. Based on a dual-actuator climate control architecture—combining independent PID-regulated heating circuits and a dynamic steam-based humidification system—the HCP achieves exceptional spatial uniformity and temporal stability across its working volume. Its six-sided heating design, coupled with a heated double-glass inner door and aluminum thermal conduction layer, minimizes thermal gradients and suppresses condensation formation on chamber walls and test specimens. This architecture directly supports compliance with demanding international standards such as IEC 60068-2-67 (damp heat, steady state) and IEC 60068-2-78 (damp heat, cyclic), where sustained operation at 85 °C / 85 % RH for 1000+ hours is required for reliability validation of electronics, polymers, and pharmaceutical dosage forms.

Key Features

• Six-side heating system ensures minimal vertical/horizontal temperature deviation (±0.3 °C at 85 °C, measured per DIN EN 60068-3-5)
• Dynamic humidity generation via stainless-steel steam generator with real-time dew point feedback—enabling precise RH control from 10 % to 98 % RH (±1.5 % RH accuracy, 25–85 °C range)
• Heated double-glass inner door prevents surface condensation and maintains optical clarity during high-humidity operation
• Aluminum thermal mass layer enhances thermal inertia and improves recovery time after door opening (<15 min to re-stabilize at 85 °C/85 % RH)
• Rear-mounted validation ports (standard) accommodate PT100 probes, data loggers, or external monitoring systems without compromising chamber integrity
• SetpointWAIT function delays test timer activation until chamber reaches and holds the target setpoint—critical for GxP-aligned stability studies

Sample Compatibility & Compliance

The HCP accommodates diverse sample geometries—including open petri dishes, sealed vials, PCB assemblies, coated substrates, and pharmaceutical blister packs—without compromising environmental fidelity. Its inert stainless-steel interior (AISI 304), non-outgassing insulation, and absence of internal plastic components ensure chemical compatibility with volatile excipients, solvents, and reactive materials. Regulatory alignment includes full traceability support for ICH Q1A(R2) accelerated stability protocols, USP environmental testing guidance, and ISO 188 rubber aging procedures. Optional 21 CFR Part 11-compliant audit trail modules enable electronic signature capture, user-level access control, and immutable event logging for FDA-submitted dossiers.

Software & Data Management

AtmoCONTROL software (included) provides intuitive multi-stage program definition—supporting unlimited ramp/soak cycles with independent temperature and humidity setpoints per segment. Data export conforms to CSV and XML formats for integration with LIMS or statistical analysis platforms (e.g., JMP, Minitab). Real-time visualization includes trend plots, deviation alarms, and pass/fail status overlays against preloaded test templates (e.g., “IEC 60068-2-78 Cycle 1”). For regulated environments, optional firmware extensions deliver electronic signatures, role-based permissions, and automated report generation compliant with ALCOA+ principles.

Applications

• Pharmaceutical stability testing: Long-term, intermediate, and accelerated studies per ICH guidelines; photostability pre-screening in combination with optional light modules
• Electronics reliability: Bias-HAST simulation, solder joint fatigue assessment, conformal coating durability under thermal-hygric cycling
• Materials science: Polymer hydrolysis kinetics, adhesive bond degradation, corrosion resistance evaluation of metallic coatings
• Building product certification: ASTM D4332 conditioning prior to tensile, flexural, or fire testing
• Biological specimen preconditioning: Tissue scaffold hydration equilibration, enzyme activity modulation studies under defined water activity (a_w)

FAQ

What is the maximum allowable operating temperature and humidity combination?
The HCP is validated for continuous operation at 85 °C / 98 % RH. At temperatures above 100 °C, humidity control is disabled per safety interlock; maximum dry-heat operation reaches 190 °C.
Does the chamber support IQ/OQ/PQ documentation packages?
Yes—Memmert provides standardized qualification protocols (including sensor calibration certificates, uniformity mapping reports, and alarm response verification checklists) aligned with ISO/IEC 17025 and EU Annex 15 requirements.
Can humidity be controlled below 10 % RH?
No—the HCP’s steam-based humidification system is optimized for 10–98 % RH. For low-RH applications (<10 %), desiccant-based chambers (e.g., Memmert HPP series) are recommended.
Is remote monitoring supported out-of-the-box?
Ethernet connectivity is standard; web-based interface allows real-time parameter viewing and basic alarm acknowledgment. Full remote control and email/SMS alerts require optional communication module installation.
How does the heated inner door contribute to test integrity?
By maintaining the inner glass surface above dew point temperature, it eliminates condensate formation—preventing localized moisture exposure, optical interference during visual inspection, and unintended sample wetting.