DRETOP SSK-4030W Water Bath Orbital Shaker

Overview

The DRETOP SSK-4030W Water Bath Orbital Shaker is an integrated benchtop bioprocess instrument engineered for precise temperature-controlled agitation of liquid-phase biological samples. It combines a thermostatically regulated water bath chamber with a high-stability orbital shaker platform—operating on the principle of uniform circular motion (orbital oscillation)—to deliver consistent convective heat transfer and homogeneous mixing across all vessel positions. Unlike air-jacketed incubator shakers, this water bath design ensures superior thermal uniformity and minimal evaporation during extended culture periods, making it especially suitable for sensitive applications such as microbial growth kinetics, enzyme reaction monitoring, suspension cell propagation, and solubility studies under controlled thermal conditions. The unit is calibrated and validated for operation within ambient +5°C to 100°C, with Pt100 resistance temperature detector feedback and PID-based digital control architecture ensuring long-term thermal stability and repeatability across daily use cycles.

Key Features

• High-fidelity temperature regulation: ±0.1°C control accuracy and ±0.5°C uniformity (measured at 25°C reference point), achieved via dual-loop PID algorithm and embedded Pt100 sensor network.
• Orbital oscillation system: 26 mm fixed amplitude with continuously adjustable speed from 50 to 300 rpm; brushless DC motor provides zero-maintenance operation, low acoustic emission (<55 dB(A)), and torque consistency across full speed range.
• Intelligent user interface: Backlit LED LCD display shows real-time temperature, rotational speed, and remaining timer duration; supports parameter locking, deviation correction, and manual PID tuning for advanced process optimization.
• Robust construction: 304 stainless steel water bath tank and lid resist corrosion and facilitate decontamination; electrostatically coated steel chassis ensures mechanical rigidity and electromagnetic compatibility in shared lab environments.
• Power-loss resilience: Automatic parameter retention upon unexpected shutdown; resumes prior settings without manual reconfiguration, preserving experimental continuity and data integrity.
• Safety-certified architecture: Integrated over-temperature cutoff, heater thermal fuse, open-circuit sensor diagnostics, and audible/visual alarm activation—fully compliant with IEC 61010-1 safety standards for laboratory equipment.

Sample Compatibility & Compliance

The SSK-4030W accommodates standard laboratory vessels—including 250 mL Erlenmeyer flasks (up to 12 units), test tubes, centrifuge tubes, and custom glassware—via its universal spring-clamp tray (400 × 300 mm). Vessel positioning maintains optimal center-of-mass alignment to minimize vibration-induced stress on cultures. All wetted surfaces are non-reactive 304 stainless steel, eliminating leaching risks and supporting routine sterilization by autoclaving or chemical immersion. The device is designed to meet essential regulatory expectations for analytical instrumentation used in quality control laboratories: it supports traceable calibration records, facilitates IQ/OQ documentation, and operates within parameters aligned with ASTM E2500 (Good Practice for Specification, Design, and Verification of Pharmaceutical and Biopharmaceutical Manufacturing Systems) and ISO 13485 Annex A. While not inherently 21 CFR Part 11–compliant, its logging-capable firmware enables integration with validated LIMS or ELN platforms that enforce electronic signature and audit trail requirements.

Software & Data Management

The SSK-4030W operates as a standalone instrument with no proprietary software dependency. All operational parameters are configured directly via front-panel controls and stored in non-volatile memory. For laboratories requiring centralized monitoring or remote logging, the unit’s analog output option (0–5 V or 4–20 mA) allows connection to external data acquisition systems or PLC-based environmental controllers. Optional RS-485 Modbus RTU interface (available upon request) enables integration into building management systems or automated workflow orchestrators. Calibration logs, maintenance history, and usage timestamps can be manually recorded in accordance with GLP documentation templates. Firmware updates—when released—are distributed via secure USB flash drive import, maintaining system integrity without internet exposure.

Applications

• Microbial cultivation: Escherichia coli, Bacillus subtilis, Pseudomonas aeruginosa, and yeast strains under defined temperature-aeration profiles.
• Cell-based assays: Suspension-adapted mammalian lines (e.g., CHO, HEK293) requiring gentle, uniform agitation to prevent shear damage while sustaining oxygen transfer.
• Biochemical reaction kinetics: Enzymatic hydrolysis, ligand-binding equilibria, and protein folding studies where thermal drift must remain below ±0.2°C over multi-hour durations.
• Pharmaceutical solubility testing: USP dissolution support for poorly soluble APIs in aqueous buffers at physiological and supra-physiological temperatures.
• Environmental microbiology: BOD incubation, coliform enumeration, and nutrient broth enrichment under standardized CLSI M02-A12 conditions.
• Reagent preparation: Homogenization of viscous solutions (e.g., agarose gels, polymer emulsions) prior to dispensing or filtration.

FAQ

Is the SSK-4030W compatible with CO₂-enriched environments?
No—this model lacks gas-tight sealing or gas inlet/outlet ports; it is intended for ambient-air operation only.
Can the oscillation mode be switched between orbital and reciprocating?
No—the SSK-4030W supports orbital motion only; reciprocating functionality is available in the SSK-4030RH variant.
What is the maximum allowable fill level for the water bath?
The bath must be filled to at least 30 mm above the tray mounting plane but not higher than 10 mm below the lid seal line (approx. 12 L capacity).
Does the unit include a calibration certificate?
Factory calibration is performed pre-shipment; a NIST-traceable calibration report is available as an optional add-on at time of order.
How often should preventive maintenance be scheduled?
Annual inspection of heater elements, sensor continuity, and motor brushless commutation integrity is recommended; no scheduled lubrication is required.