WIGGENS WS21 Advanced Orbital Shaking Water Bath with Precision Temperature Control

Overview

The WIGGENS WS21 is an advanced orbital shaking water bath engineered for high-precision temperature-controlled incubation and agitation of liquid samples in life science, pharmaceutical, and quality control laboratories. It integrates a thermostatically regulated water bath with a variable-speed orbital shaker platform—enabling simultaneous temperature maintenance and gentle, uniform mixing via circular motion. The system operates on Peltier-free resistive heating with dual-sensor thermal feedback architecture, delivering exceptional thermal homogeneity and long-term stability (±0.02 °C) across the full operating range of +5 to 99.9 °C. Unlike basic water baths, the WS21 employs a sealed stainless-steel heating coil and mirror-finish 316-grade stainless-steel inner chamber—ensuring corrosion resistance, compatibility with aqueous and mild chemical solutions, and compliance with GLP documentation requirements for traceable calibration.

Key Features

• Dual independent temperature sensors positioned at different vertical levels within the bath chamber enable real-time low-level detection: if differential exceeds 15 °C, the unit triggers audible/visual alarm and cuts power to prevent dry-run damage.
• User-configurable sample-sensitive temperature limits allow setting upper/lower thresholds; deviation initiates immediate alert without interrupting operation unless critical.
• Hardware-enforced overtemperature cutoff at 105 °C provides fail-safe protection against controller failure or sensor drift.
• IP43-rated enclosure with seamless waterproof keypad and integrated splash-resistant panel permits safe operation under humid or wet-hand conditions per IEC 60529 standards.
• Self-diagnostic firmware continuously monitors sensor integrity, heater response, and motor drive status—displaying error codes and descriptive fault messages on the OLED interface.
• Onboard calibration function enables end-user verification and adjustment using NIST-traceable reference thermometers—no service technician required for routine accuracy validation.
• RS232 serial interface supports integration with LabVIEW, MATLAB, or custom SCADA systems; optional wireless module enables remote status polling and alarm notification via Ethernet/Wi-Fi infrastructure.

Sample Compatibility & Compliance

The WS21 accommodates standard laboratory vessels including Erlenmeyer flasks (up to 2 L), test tubes (13–25 mm OD), separatory funnels, and multi-well plates when used with compatible racks. Its 8–20 L adjustable-volume bath chamber allows optimization for minimal evaporation (small volume) or maximal thermal mass (large volume). All wetted parts meet USP Class VI biocompatibility criteria and are suitable for ISO 13485-certified medical device manufacturing environments. The system complies with EN 61010-1:2019 for electrical safety and EN 61326-1:2013 for electromagnetic compatibility. Optional accessories—including anti-evaporation floating balls, transparent acrylic lids, and autoclavable stainless-steel covers—support applications requiring sterility assurance or vapor containment per EU GMP Annex 1 guidelines.

Software & Data Management

While the WS21 operates autonomously via its front-panel interface, the included PC software (compatible with Windows 10/11) enables time-stamped logging of temperature, speed, and alarm events at user-defined intervals (1 s to 60 min). Logged data exports to CSV format for audit trail generation and statistical process control (SPC) analysis. When deployed in regulated environments, the software supports 21 CFR Part 11-compliant user access controls, electronic signatures, and immutable audit logs—meeting FDA expectations for electronic records in QC/QA workflows. Wireless monitoring functionality permits centralized oversight of multiple units through a secure web dashboard, facilitating facility-wide environmental monitoring in accordance with ISO/IEC 17025 clause 7.5.2.

Applications

• Cell culture maintenance during subculturing and passaging, especially for suspension-adapted lines requiring continuous gentle agitation.
• Enzyme kinetics assays where precise thermal control and homogeneous mixing directly impact reaction rate reproducibility.
• Extraction protocols in food safety testing (e.g., pesticide residue analysis per AOAC 2012.01) and pharmaceutical dissolution studies (USP ).
• Plasma fractionation and coagulation assays requiring strict thermal consistency to preserve protein conformation and activity.
• Accelerated corrosion testing of metallic biomaterials in simulated physiological saline solutions (ASTM F2129).
• Pre-incubation of microbiological media prior to pour plating or membrane filtration procedures (ISO 7218).

FAQ

Does the WS21 support cooling functionality?
No—the WS21 is a heating-only system. For applications requiring sub-ambient temperature control, consider the WIGGENS WS30 series with integrated Peltier cooling.
Can the orbital motion be disabled while maintaining temperature control?
Yes. The shaker motor and bath heater operate independently; users may deactivate agitation while retaining active temperature regulation.
Is the bath fluid level adjustable during operation?
Yes—via the front-panel menu, users can define minimum and maximum fill volumes (8–20 L); the system dynamically adjusts thermal output and circulation flow to maintain stability across this range.
What calibration standards are recommended for annual verification?
A NIST-traceable platinum resistance thermometer (PRT) with ±0.01 °C uncertainty is recommended for field verification per ISO/IEC 17025 Clause 6.5.2.
Are third-party data acquisition systems compatible with the RS232 port?
Yes—standard ASCII command protocol documentation is provided upon request, enabling integration with industrial PLCs, building management systems (BMS), or enterprise LIMS platforms.