Labonce Labonce-250RC Pharmaceutical Low-Temperature Stability Chamber

Overview

The Labonce Labonce-250RC Pharmaceutical Low-Temperature Stability Chamber is an engineered environmental test system designed specifically for ICH Q5C-compliant stability studies and long-term storage of thermolabile pharmaceuticals, biologics, reference standards, and clinical trial materials under tightly controlled 5 ± 1 °C conditions. Unlike general-purpose refrigerators, the Labonce-250RC implements a dual-compressor architecture—where one unit operates continuously while the other remains in hot-standby mode—to ensure uninterrupted thermal integrity during compressor maintenance or unexpected failure. Its airflow management is based on a validated laminar recirculation path, minimizing thermal stratification across the chamber volume and delivering uniform temperature distribution (≤1.0 °C) per YY/T 0086–2020 requirements. The chamber’s structural design integrates high-density polyurethane insulation (≥100 mm thick), a seamless 304 stainless steel interior (electropolished finish), and a corrosion-resistant powder-coated exterior—ensuring mechanical durability, microbial control, and compliance with GLP laboratory infrastructure standards.

Key Features

• Dual hermetic industrial compressors with automatic failover logic to sustain setpoint integrity during primary unit downtime
• Programmable color touchscreen controller supporting triple-tiered access control (operator, supervisor, administrator) and audit-trail-enabled electronic data logging
• High-efficiency forced-air circulation system with optimized duct geometry, ensuring ≤1.0 °C temperature uniformity across all shelf positions
• Full mirror-finish 304 stainless steel inner chamber—non-porous, non-shedding, compatible with routine disinfection protocols (e.g., 70% IPA, hydrogen peroxide vapor)
• Integrated safety architecture: real-time monitoring of compressor discharge temperature, high-side pressure, evaporator frost accumulation, and mains voltage stability
• Multi-channel alarm system with local audible alert and configurable remote SMS notification for temperature excursions (>±1.0 °C), power loss, door ajar, and sensor fault conditions
• Standard equipment includes calibrated PT100 temperature sensors (NIST-traceable), 7 adjustable stainless steel shelves, observation window with anti-fog coating, and 2× Ø50 mm test ports with silicone rubber plugs

Sample Compatibility & Compliance

The Labonce-250RC accommodates standard pharmaceutical packaging formats—including vials, syringes, blister packs, secondary cartons, and stability study trays—without compromising airflow dynamics or thermal homogeneity. Its internal layout permits unrestricted placement of temperature mapping probes (per ISO 14644-3 and ASTM E2297) for qualification studies. The unit complies with YY/T 0086–2020 “Medical Refrigerators”, and its control firmware supports 21 CFR Part 11–compliant electronic records when paired with Labonce’s optional validation package (IQ/OQ/PQ templates, sensor calibration certificates, and traceability documentation). All electrical components meet IEC 61010-1 safety standards; the refrigerant used (R404A or R507, depending on regional regulations) conforms to current EU F-Gas and EPA SNAP requirements.

Software & Data Management

The embedded controller logs timestamped temperature data at user-defined intervals (1–60 minutes) into non-volatile memory with ≥30 days of onboard storage. Data export is supported via USB flash drive in CSV format, preserving column headers, units, and metadata (operator ID, event flags, calibration status). Optional Ethernet connectivity enables integration into centralized laboratory informatics systems (LIMS) through Modbus TCP or HTTP API endpoints. Audit trails record all parameter changes, user logins, alarm acknowledgments, and calibration events—with immutable timestamps and digital signatures. For regulated environments, optional software modules provide automated report generation aligned with WHO TRS 992 Annex 9 and ICH Q5C Annex 1 reporting conventions.

Applications

• ICH Q5C long-term stability testing of drug substances and products at 5 ± 1 °C (Refrigerated Condition)
• Storage of monoclonal antibodies, mRNA intermediates, viral vectors, and other cold-chain-sensitive biologics requiring continuous thermal surveillance
• Reference standard holding under pharmacopeial conditions (e.g., USP , EP 2.2.45)
• Stability-indicating assay preparation environments where ambient temperature fluctuations must be excluded from analytical variance
• GLP-compliant sample archiving for regulatory submissions (FDA, EMA, PMDA)
• QC release testing support for temperature-critical excipients and sterile filtration validation runs

FAQ

What is the difference between the Labonce-250BC and Labonce-250RC models?
The Labonce-250BC maintains 2–14 °C for general pharmaceutical storage, while the Labonce-250RC is engineered for precision stability testing at 5 ± 1 °C, featuring dual compressors, tighter uniformity specs (≤1.0 °C), and enhanced data integrity features.
Does the Labonce-250RC support IQ/OQ/PQ documentation?
Yes—Labonce provides vendor-qualified IQ/OQ/PQ protocol templates, as-built drawings, sensor calibration certificates (NIST-traceable), and commissioning reports upon request.
Can the unit operate continuously for 24/7 stability studies?
Yes—the dual-compressor design, industrial-grade components, and redundant safety monitoring enable unattended operation for ≥12 months without scheduled downtime.
Is remote monitoring available without third-party hardware?
Yes—SMS-based alerts are built-in; optional Ethernet/WiFi modules enable real-time dashboard viewing and LIMS integration without external gateways.
How is temperature mapping performed inside the chamber?
The unit includes two pre-installed Class A PT100 sensors (working + reference) and four additional probe ports (Ø50 mm), allowing simultaneous placement of up to 15 calibrated thermistors per ISO 14644-3 mapping protocols.