RADOBIO Stab S2T Stackable Compact Full-Temperature Orbital Shaker Incubator

Overview

The RADOBIO Stab S2T Stackable Compact Full-Temperature Orbital Shaker Incubator is an engineered solution for precision-controlled microbial, cell, and enzymatic cultivation under dynamic orbital agitation and tightly regulated thermal conditions. Designed around a true full-range thermoelectric temperature control architecture—capable of stable operation from 4°C (refrigerated) to 60°C (incubation)—the Stab S2T integrates high-fidelity PID-based thermal regulation with low-vibration orbital motion mechanics. Its core operational principle relies on controlled sinusoidal orbital displacement (26 mm or 50 mm standard amplitude) driven by a brushless DC motor coupled to a dynamically balanced cam-shaft transmission system. This configuration ensures reproducible shear profiles essential for aerobic bacterial growth, suspension cell expansion, and protein expression studies. Unlike conventional shaker incubators that rely solely on resistive heating and passive cooling, the Stab S2T employs an externally mounted, waterproof, zero-heat-output fan and a thermally isolated motor assembly—minimizing parasitic heat load and enabling tighter thermal setpoint fidelity across the entire operating range.

Key Features

• 7-inch vertical capacitive touchscreen interface with intuitive multi-level menu navigation—no specialized training required for parameter adjustment, multi-segment program definition, or real-time curve visualization
• Modular stackable architecture supporting single-unit floor-standing, benchtop, or vertically integrated configurations up to three independent decks (Stab S2T-3), each operating with autonomous temperature, speed, and timing control
• Electropolished 304 stainless steel chamber with seamless radius-corner construction—fully washdown-compatible and resistant to corrosion from ethanol, isopropanol, hydrogen peroxide vapor, and common lab disinfectants
• CNC-machined stainless steel universal clamps fabricated from solid billet stock—eliminating weld points or fasteners prone to fatigue failure; clamp arms feature medical-grade polymer overmolding to prevent glassware abrasion and operator injury
• Dual-pane tempered safety glass door with optional resistive heating element—prevents condensation during low-temperature/high-humidity operation while maintaining optical clarity for continuous visual monitoring
• Integrated UVC germicidal lamp (254 nm) with timer-controlled activation—designed for routine decontamination during idle periods, compliant with ISO 14644-1 Class 5 cleanroom-compatible maintenance protocols
• Retractable light-blocking curtain positioned between inner glass and outer panel—enables photophobic culture handling without compromising ergonomic access or optical inspection capability
• Externalized drive train and electronics—ensuring IP54-rated protection against humidity ingress; all moisture-sensitive components reside outside the incubation chamber, supporting long-term reliability in high-RH environments

Sample Compatibility & Compliance

The Stab S2T accommodates standard microbiological and cell culture vessels—including Erlenmeyer flasks (125 mL to 2000 mL), deep-well microplates (96- and 384-well), conical tubes (15 mL and 50 mL), and custom bioreactor bags—via interchangeable clamp systems. Its internal geometry (720 × 632 × 475 mm) and 340 mm usable height support tall vessel configurations without compromising orbital clearance. The system complies with IEC 61000-6-3 (EMC emissions), IEC 61010-1 (safety for laboratory equipment), and meets mechanical stability requirements per ASTM D4169 for stacked instrumentation under vibration testing. While not certified for GMP manufacturing, its audit-ready data logging (250,000-point memory, timestamped, with user-accessible USB export), programmable alarm thresholds, and power-fail recovery functionality align with GLP documentation standards and FDA 21 CFR Part 11 expectations for electronic record integrity when deployed in QC/QA or preclinical research settings.

Software & Data Management

The embedded controller firmware supports up to five independent multi-step programs, each containing up to thirty user-defined segments with independent temperature, speed, duration, and ramp-rate parameters. Data acquisition occurs at configurable intervals (30 s to 9999 s), with all measurements—including actual temperature, setpoint, RPM, elapsed time, and alarm status—stored with millisecond-accurate timestamps. Historical datasets are exportable via USB-A port in CSV format, compatible with MATLAB, Python pandas, and LIMS integration workflows. No cloud connectivity or proprietary software installation is required; raw logs retain native UTC timestamps and include operator ID fields where enabled via password-protected admin mode. Audit trail functionality records parameter changes, door openings, alarm events, and power interruptions—supporting traceability requirements for ISO/IEC 17025-accredited laboratories.

Applications

The Stab S2T serves as a primary platform for aerobic microbial propagation (e.g., E. coli, Bacillus subtilis), recombinant protein expression in shake-flask bioreactors, suspension mammalian cell line expansion (CHO, HEK293), yeast fermentation optimization, and enzymatic activity assays requiring precise thermal and mixing control. Its refrigerated capability enables cold-adapted organism studies and low-temperature metabolic profiling. The stackable design is particularly suited for high-throughput strain screening, media optimization experiments, and parallel bioprocess development where footprint efficiency and condition independence between replicates are critical. Academic core facilities, contract research organizations (CROs), and biopharma process development labs utilize the Stab S2T for scalable, reproducible shake-flask cultivation prior to bioreactor transfer.

FAQ

Can the Stab S2T operate continuously at 4°C with active shaking?
Yes—the thermoelectric cooling system maintains stable sub-ambient temperatures during orbital agitation without compressor cycling or condensate accumulation.
Is UV sterilization validated against specific microbial strains?
The 254 nm UVC source delivers ≥10 mJ/cm² radiant exposure over 30 minutes, sufficient for >3-log reduction of Bacillus atrophaeus spores and Aspergillus niger conidia per ISO 15714:2019 Annex B protocols.
What happens during unexpected power loss?
All active parameters—including current setpoints, elapsed time, and program segment—are retained in non-volatile memory; the unit resumes operation automatically upon power restoration with audible and visual notification of the interruption event.
How is mechanical stability ensured in stacked configurations?
Each deck features independent anti-slip rubber feet and interlocking alignment pins; structural validation testing confirms ≤0.05 mm lateral deflection at 300 rpm under full 35 kg load across all three tiers.
Are third-party data acquisition tools supported?
Yes—real-time serial output (RS-232) is available via optional DB9 interface for integration with SCADA, LabVIEW, or custom Python-based monitoring platforms.