Ottescience SWB-2000 Constant-Temperature Water Bath Shaker

Overview

The Ottescience SWB-2000 Constant-Temperature Water Bath Shaker is an integrated incubation and agitation platform engineered for precise thermal control and reproducible orbital motion in life science applications. It operates on the principle of water-jacketed temperature regulation combined with mechanical horizontal reciprocating oscillation—ensuring uniform heat transfer across samples while minimizing thermal gradients and condensation-related contamination. Unlike air-based incubators or dry-block shakers, the water bath design delivers superior temperature homogeneity (±0.2°C accuracy) and dampens mechanical vibration transmission, making it especially suitable for sensitive biological assays including bacterial culture expansion, enzyme kinetics studies, solubility testing, and hybridization protocols where both thermal stability and gentle mixing are critical.

Key Features

• Microprocessor-controlled PID temperature regulation with adaptive tuning—minimizes overshoot and stabilizes within ±0.2°C across the full operating range (RT+5°C to 100°C)
• Dual independent 4-digit LED displays: one for setpoint temperature, one for real-time bath temperature—enabling immediate verification of thermal status without menu navigation
• Adjustable oscillation frequency from 40 to 150 rpm and programmable timer from 10 to 90 minutes—supporting protocol-specific agitation profiles for diverse sample types
• 18 mm horizontal oscillation amplitude optimized for consistent suspension of microbial cultures, cell suspensions, and immunoassay plates without splashing or foaming
• Integrated magnetic stirrer activated automatically when shaking is paused—maintains uniform water temperature distribution across the 20 L bath volume, eliminating cold spots
• Conical lid design with angled inner surface prevents condensation droplet formation and subsequent contamination of sample vessels during extended incubation
• Over-temperature safety cutoff (factory-default: setpoint +10°C, user-adjustable) coupled with redundant thermal fusing ensures compliance with IEC 61010-1 laboratory equipment safety standards

Sample Compatibility & Compliance

The SWB-2000 accommodates standard laboratory vessels—including Erlenmeyer flasks (up to 2 L), test tubes (13–25 mm diameter), microcentrifuge tube racks, and multi-well plate carriers—via interchangeable stainless-steel clamping fixtures. Its stainless-steel water bath chamber (490 × 295 × 150 mm internal dimensions) resists corrosion from saline, buffer, and mild organic solutions. The device conforms to ISO/IEC 17025-relevant environmental control requirements for analytical laboratories and supports GLP-compliant workflows through stable, traceable thermal performance. While not FDA 21 CFR Part 11–certified out-of-the-box, its analog controls and non-networked architecture simplify validation documentation for regulated QC/QA environments requiring audit-ready operational consistency.

Software & Data Management

The SWB-2000 operates via a dedicated front-panel interface with tactile membrane switches and no embedded firmware or connectivity options. All parameters—including temperature setpoint, oscillation speed, and timer duration—are entered manually using increment/decrement keys with 0.1°C and 1 rpm resolution. This analog control architecture eliminates software dependencies, reducing validation burden in GxP settings and ensuring long-term operational reliability without OS updates or driver compatibility concerns. Temperature calibration can be performed in-house using NIST-traceable reference thermometers, and the built-in offset correction function allows fine-tuning of displayed values against certified measurement standards.

Applications

• Bacterial and yeast culture propagation under controlled temperature and aeration conditions
• Enzyme activity assays requiring simultaneous thermal stabilization and substrate mixing
• Solubility and dissolution profiling of pharmaceutical compounds in aqueous media
• Nucleic acid hybridization (e.g., Southern/Northern blotting pre-hybridization steps)
• Antibody-antigen binding kinetics in ELISA and lateral flow assay development
• Cell lysis optimization using detergent-based or thermal-assisted methods
• Standardization of reagent preparation workflows across multiple lab shifts

FAQ

Is the SWB-2000 compatible with sterile tissue culture work?
Yes—its sealed water bath, condensation-minimizing lid, and optional autoclavable stainless-steel sample holders support aseptic technique when used inside laminar flow hoods or biosafety cabinets.
Can the magnetic stirrer operate independently of the shaker motor?
Yes—the stirrer activates automatically only when oscillation is halted; it cannot be engaged while shaking is active, preventing interference with motion dynamics.
What maintenance is required for long-term reliability?
Routine descaling using 5% acetic acid solution every 3–6 months (depending on local water hardness) is recommended to prevent heater scaling; annual inspection of thermal fuse integrity is advised for continuous-use installations.
Does the unit include data logging capability?
No—this model lacks digital output or USB/RS-232 interfaces. For time-series temperature monitoring, external calibrated loggers (e.g., HOBO UX100 series) must be deployed within the bath.
Is the SWB-2000 suitable for use with organic solvents?
It is rated for aqueous and buffered solutions only. Use with flammable or corrosive organics (e.g., acetone, chloroform) is prohibited due to heater enclosure design and lack of explosion-proof certification.