Shanghai RightOne LHS-150CA Temperature and Humidity Controlled Environmental Test Chamber

Overview

The Shanghai RightOne LHS-150CA Temperature and Humidity Controlled Environmental Test Chamber is an upright, air-cooled chamber engineered for precise, long-term stabilization of temperature and relative humidity across a broad operational range (–10°C to +80°C; 30–95% RH). Designed in accordance with international standards for environmental simulation—including ISO 17025-compliant laboratory infrastructure requirements and alignment with ASTM E145 and IEC 60068-3-5—the chamber employs a dual-mode thermal management architecture combining forced-air convection, high-efficiency refrigeration, and resistive steam humidification. Its primary function is to maintain stable, reproducible ambient conditions for stability testing, accelerated aging studies, biobanking, and quality assurance protocols where thermohygrometric fidelity directly impacts sample integrity—particularly for biological specimens (e.g., plasma, vaccines, cell lines), polymer-based materials, electronic components, and pharmaceutical intermediates.

Key Features

• Microprocessor-based PID control system with 5.7-inch backlit LCD interface supporting up to 99 programmable cycles, each configurable with 30 independent segments (max. 99 h 99 min per segment) for complex ramp-soak-hold profiles;
• Double-door design featuring laminated tempered glass viewport with silicone-gasketed sealing, minimizing thermal leakage while enabling non-intrusive visual monitoring;
• Air-circulation system optimized via directional ducting and low-turbulence axial fans to ensure ≤±0.5°C temperature uniformity and ≤±3% RH spatial consistency (measured at 9 locations per IEC 60068-3-5 Annex B);
• Stainless steel (SUS304) interior chamber with radius-corner geometry and removable, height-adjustable shelves (3 standard, up to 19 optional) for flexible load configuration and ease of cleaning;
• CFC-free refrigeration using R134a/R406a blend, compliant with Montreal Protocol Phase-Out Schedule and EU F-Gas Regulation (EU No. 517/2014);
• Integrated humidification module with stainless steel reservoir and PTC-heated immersion elements, coupled with Vaisala HUMICAP®-based humidity sensing for closed-loop RH feedback control;
• Mobility system comprising dual-locking casters (2 swivel + 2 fixed) with load-rated polyurethane treads and leveling feet for vibration-dampened positioning on standard lab flooring.

Sample Compatibility & Compliance

The LHS-150CA accommodates a wide range of sample formats—from stacked microcentrifuge racks and cryovial trays to PCB test boards and polymer film reels—within its 150 L working volume (480 × 390 × 780 mm). Its operating envelope satisfies critical regulatory thresholds for GxP environments: temperature and humidity uniformity data are traceable to NIST-traceable reference sensors, and the system supports audit-ready operation when paired with optional RS485/USB interfaces and time-stamped logging software. The chamber meets essential requirements for USP , ISO 14644-1 Class 8 cleanroom-adjacent storage, and WHO Technical Report Series No. 961 Annex 9 (Good Storage Practices for Vaccines). Optional accessories—including independent overtemperature cut-off (IEC 61000-4-2 compliant), BOD sockets, and embedded thermal printers—facilitate integration into GLP/GMP workflows requiring 21 CFR Part 11–compliant electronic records.

Software & Data Management

When equipped with the optional USB/RS485 communication module and proprietary RightOne DataLog Pro software (v3.2+), the LHS-150CA enables real-time parameter streaming, remote setpoint adjustment, and automated report generation in PDF/CSV formats. All logged data include timestamps, operator IDs (via login authentication), and digital signatures—meeting ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). The software supports trend analysis of chamber performance over time (e.g., compressor duty cycle, humidity sensor drift) and exports calibration history aligned with ISO/IEC 17025 Clause 6.4.2. Firmware updates are delivered via signed firmware packages verified through SHA-256 hash validation.

Applications

• Long-term stability assessment of biologics under ICH Q5C conditions (2–8°C/15–25°C with controlled RH);
• Accelerated degradation testing of adhesives, coatings, and elastomers per ASTM D3045;
• Environmental stress screening of automotive electronics per AEC-Q200;
• Controlled-humidity conditioning of hygroscopic powders prior to tablet compression (pharmaceutical QC);
• Low-temperature preservation of clinical biospecimens during pre-analytical processing;
• Material compatibility testing of packaging components under cyclic thermo-hygrometric loads (ISO 11607-1).

FAQ

What is the recommended calibration interval for the LHS-150CA?

Calibration should be performed annually using NIST-traceable dry-well calibrators (temperature) and saturated salt solutions (humidity), or per internal SOPs aligned with ISO/IEC 17025.
Can the chamber operate continuously at –10°C and 95% RH simultaneously?

Yes—the refrigeration and humidification subsystems are independently modulated and validated for concurrent operation across the full specified range.
Is the unit suitable for use in a Class II biosafety cabinet room?

Yes, provided ambient room conditions remain within 15–30°C and 30–70% RH, and adequate ventilation is maintained for heat dissipation (min. 300 mm clearance on rear/sides).
Does the PID controller support external analog input for cascade control?

No—control is self-contained; however, RS485 Modbus RTU output allows integration into third-party SCADA or BMS platforms.
What maintenance is required for the humidification system?

The stainless steel reservoir must be drained and rinsed weekly; distilled water is mandatory to prevent mineral scaling on heating elements and sensor fouling.