Truelab A15-290 Desiccator Cabinet

Overview

The Truelab A15-290 Desiccator Cabinet is an engineered environmental control solution designed for long-term, stable storage of moisture-sensitive laboratory materials—including hygroscopic reagents, reference standards, calibration weights, precision optics, PCBs, and pharmaceutical intermediates. Unlike passive desiccant cabinets, the A15-290 employs an active, closed-loop humidity regulation system based on solid-state Peltier dehumidification and microprocessor-driven feedback control. It maintains a precisely adjustable relative humidity (RH) setpoint between 15% and 60% RH with ±3% RH accuracy and ±1°C temperature stability—critical for preventing hydrolysis, oxidation, or crystalline phase transition in stored samples. Its thermally insulated double-wall construction, low-emission tempered glass door, and seamless internal chamber minimize thermal drift and external vapor intrusion, ensuring reproducible storage conditions across daily and seasonal ambient fluctuations.

Key Features

• Active Peltier-based dehumidification system—no consumable desiccants required, enabling continuous, maintenance-light operation
• Humidity Manager V2 digital controller with real-time LCD display, programmable RH setpoints, and built-in data logging (up to 30 days at 10-min intervals)
• Exportable温湿度 (temperature/humidity) time-series curves via USB interface—supports CSV export for traceability and audit readiness
• Low-power architecture: average consumption of only 5 W during steady-state operation; peak draw ≤140 W during initial conditioning
• Two adjustable stainless-steel shelves (555 × 580 × 20 mm each), load-rated to 15 kg per shelf, with non-slip silicone edge strips
• CE-certified electromagnetic compatibility (IEC 61000-6-3/6-4) and RoHS-compliant materials—suitable for ISO 17025-accredited laboratories
• Front-access design with magnetic door seal and ergonomic handle; optional lockable latch available upon request

Sample Compatibility & Compliance

The A15-290 accommodates standard labware including glass vials (up to 100 mL), amber HDPE bottles, aluminum weighing pans, and sealed foil pouches. Its interior chamber—free of volatile organic adhesives or PVC gaskets—meets USP material safety requirements for pharmaceutical storage. The cabinet supports compliance with multiple regulatory frameworks: it facilitates adherence to ICH Q5C (stability testing of biotechnological products), ASTM E145-22 (standard specification for gravity-convection and forced-ventilation ovens), and EU GMP Annex 15 (qualification of storage equipment). While not intrinsically rated for hazardous locations, its non-sparking components and absence of internal fans make it suitable for Class 1, Division 2 environments when installed per local electrical codes.

Software & Data Management

The Humidity Manager V2 firmware includes embedded audit-trail functionality compliant with FDA 21 CFR Part 11 principles: all parameter changes (e.g., RH setpoint adjustments, calibration events) are timestamped, user-logged, and immutable within device memory. Logged data can be retrieved via USB mass-storage mode without proprietary software—eliminating vendor lock-in. Exported CSV files contain columns for DateTime, RH (%), Temp (°C), System Status (Idle/Dehumidifying), and Event Flag (e.g., “Setpoint Changed by User”). Optional integration with LabVantage or Thermo Fisher SampleManager is achievable via Modbus RTU over RS-485 (hardware adapter sold separately).

Applications

• Storage of hygroscopic analytical standards (e.g., potassium hydrogen phthalate, sodium chloride reference materials) per ISO/IEC 17025 Clause 7.7.1
• Pre-conditioning of test specimens prior to tensile, dielectric, or thermal analysis (ASTM D618, IEC 60252-1)
• Secure holding of calibrated pipette tips, syringe filters, and HPLC vial septa to preserve integrity and reduce baseline noise
• Short-term quarantine of incoming raw materials pending identity verification (USP , Ph. Eur. 5.1.6)
• Backup humidity-controlled environment during main cleanroom HVAC downtime—validated for ≤4-hour excursion tolerance

FAQ

Does the A15-290 require periodic desiccant replacement?

No—this cabinet uses solid-state Peltier dehumidification and condensate collection, eliminating the need for silica gel or molecular sieve cartridges.
Can the unit operate continuously at 15% RH in a 35°C ambient environment?

Yes—tested per IEC 60068-2-1/2 under 35°C/85% RH ambient; achieves and holds 15% RH within 120 minutes after door opening (≤3 sec exposure).
Is the internal chamber resistant to common solvents such as acetone or IPA?

The electropolished stainless-steel interior and silicone-free polymer seals resist incidental exposure; however, prolonged contact with chlorinated or aromatic solvents is not recommended.
What validation documentation is provided with shipment?

Each unit ships with Factory Acceptance Test (FAT) report including as-delivered RH/Temp uniformity mapping (9-point grid), controller calibration certificate traceable to NIM (China), and CE Declaration of Conformity.
Is remote monitoring supported out-of-the-box?

Not natively—but the USB data export interface enables scheduled automated retrieval via Python or LabVIEW scripts; Ethernet/WiFi modules are available as OEM add-ons.