DRETOP MH-J250 Drug Stability Testing Chamber
| Brand | DRETOP |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | MH-J250 |
| Price Range | USD 4,200 – 8,400 (FOB Shanghai) |
| Temperature Control Range | 0–65 °C |
| Temperature Uniformity | ±2.5 °C |
| Temperature Fluctuation | ±0.5 °C |
| Humidity Control Range | 30–95 %RH (optional 20–95 %RH) |
| Humidity Deviation | ±3 %RH |
| Illumination Capability | Optional LED-based photometric control (Lx display, adjustable intensity) |
| Internal Volume | 250 L |
| Power Supply | AC 220 V, 50 Hz |
| Input Power | 2400 W |
| Chamber Dimensions (W×D×H) | 580 × 500 × 850 mm |
| Shelf Quantity | 3 adjustable stainless-steel shelves |
| Data Logging Interval | 60 s (≥3 years continuous storage) |
| Compliance Support | IQ/OQ/PQ documentation available |
Overview
The DRETOP MH-J250 Drug Stability Testing Chamber is an ICH-compliant environmental simulation system engineered for long-term, accelerated, and stress-condition stability studies of pharmaceutical products in accordance with ICH Q1A(R2), Q1B, Q5C, and relevant regional regulatory expectations (USP <1151>, EP 2.2.45, JP 17). It employs a dual-loop, independently controlled thermohygrometric architecture—separate refrigeration, heating, and humidification systems—to maintain precise, reproducible climate conditions across its 250 L stainless-steel chamber. The chamber integrates high-efficiency compressor-based cooling (R290 refrigerant), NiCr alloy heating elements, centrifugal forced-air circulation, and high-stability capacitive humidity sensors operating continuously at elevated temperatures—eliminating dry/wet-bulb maintenance. Its core function is to replicate defined storage environments—including long-term (25 °C/60 %RH), accelerated (40 °C/75 %RH), intermediate (30 °C/65 %RH), high-humidity (25 °C/90 %RH), and photostability (ICH Q1B) conditions—for active pharmaceutical ingredients (APIs), finished dosage forms, and biologics under GLP- or GMP-aligned workflows.
Key Features
- 10.1-inch full-color capacitive touchscreen HMI with multi-language interface (English/Chinese), hierarchical user permissions (Administrator, Maintenance Technician, Operator), and audit-trail-enabled operation logging.
- Programmable multi-segment control: up to 100 programs, each supporting 100 steps with independent ramp/soak settings for temperature, humidity, and optional illumination (Lx display, 0–25,000 Lx).
- Fuzzy PID + adaptive compensation algorithm ensures ±0.5 °C temperature fluctuation and ±2.5 °C uniformity (measured per ASTM E742-22 at 9 locations); humidity control accuracy ±3 %RH across 30–95 %RH range.
- Dual independent climate loops: refrigeration and humidification operate without cross-interference, reducing thermal inertia and enabling faster recovery after door openings (≤15 min return to setpoint).
- Robust mechanical design: silicone rubber door gasket (stable from −20 °C to +80 °C), optimized airflow ducting for laminar distribution, automatic defrost cycle, and IP54-rated internal lighting.
- Comprehensive safety architecture: independent overtemperature cutoff (K-type backup controller), compressor/fan overload protection, leakage current detection, and audible/visual alarm with SMS alert (optional B-type module).
- Data integrity assurance: 60-second interval logging stored internally for ≥3 years; real-time curve plotting; exportable CSV via USB or RS485 (R-type option); built-in micro-printer (standard) for immediate hard-copy traceability.
Sample Compatibility & Compliance
The MH-J250 accommodates standard pharmaceutical packaging configurations—including blister packs, HDPE bottles, glass vials, syringes, and lyophilized trays—on three adjustable 304 stainless-steel shelves (load capacity: 15 kg/shelf). Its chamber geometry and airflow profile meet ICH Q1B photostability testing requirements when equipped with optional E-type (Lx-display) or V-type (UV-C germicidal) illumination modules. Full 3Q validation packages (IQ/OQ/PQ) are provided upon request, aligned with Annex 15 and FDA guidance on computerized system validation. CNAS-accredited calibration certificates are available for user-defined reference points (e.g., 25 °C/60 %RH, 40 °C/75 %RH), supporting audit readiness for FDA 21 CFR Part 11, EU Annex 11, and WHO TRS 992 compliance.
Software & Data Management
The embedded control firmware supports time-stamped event logging (system start/stop, alarms, parameter changes, door openings), with immutable records retained for ≥18 months. All operational data—including real-time temperature/humidity curves, historical trends, and alarm histories—are accessible via the touchscreen interface with role-based read-only access for Maintenance Technicians and Operators. Optional RS485 connectivity enables integration with LIMS or SCADA platforms; S-type mobile app provides remote monitoring, push notifications, and diagnostic support. Data exports comply with ALCOA+ principles: attributable, legible, contemporaneous, original, accurate, complete, consistent, enduring, and available.
Applications
- ICH Q1A(R2)-compliant accelerated and long-term stability protocols for small-molecule drugs, peptides, and monoclonal antibodies.
- Forced degradation studies under high-humidity (90 %RH), elevated temperature (60 °C), and oxidative stress conditions.
- Photostability assessment per ICH Q1B using calibrated visible/UV light sources (optional RGB/V modules).
- Excipient compatibility screening and formulation robustness evaluation during pre-formulation development.
- Storage condition justification for label claims (e.g., “Refrigerate at 2–8 °C” or “Protect from moisture”).
- Environmental stress testing of medical devices and combination products per ISO 11607 and AAMI TIR17.
FAQ
Does the MH-J250 comply with ICH Q1B photostability requirements?
Yes—when configured with the optional E-type (Lx-display) or multi-spectrum light modules, it delivers uniform irradiance (0–25,000 Lx) and spectral output meeting ICH Q1B spectral distribution criteria.
Can the chamber be validated for GMP production use?
Yes—DRETOP supplies fully documented IQ/OQ/PQ protocols, executed by qualified personnel, and supports requalification per your site’s change control and periodic review schedule.
Is remote monitoring and alarm notification supported?
Standard USB and optional RS485 enable local PC integration; the B-type SMS module provides real-time fault alerts to designated mobile numbers.
What humidity range options are available beyond standard 30–95 %RH?
Custom calibration and sensor configuration support extended ranges down to 20 %RH or up to 98 %RH, subject to chamber modification and validation.
How is data integrity maintained during power interruption?
The system features auto-restart with state recovery, non-volatile memory retention, and battery-backed real-time clock—ensuring no loss of logged data or program continuity.
