WIGGENS WS20 Advanced Orbital Water Bath Incubator Shaker

Overview

The WIGGENS WS20 Advanced Orbital Water Bath Incubator Shaker is a precision-engineered laboratory instrument designed for applications requiring simultaneous temperature control and orbital agitation in aqueous environments. It operates on the principle of resistive heating combined with forced convection via an integrated dual-mode circulation pump (internal bath recirculation and external fluid transfer), ensuring uniform thermal distribution across the entire bath volume. Unlike static water baths or air-based incubators, the WS20 integrates controlled orbital shaking (20–200 rpm) directly into the heated bath chamber—enabling homogeneous suspension of cell cultures, enzymatic reactions, solubility studies, and sample equilibration without mechanical decoupling between thermal and motion modules. Its design targets laboratories performing GLP-compliant biological assays, pharmaceutical stability testing, microbiological enrichment, and routine QC procedures where reproducible thermal kinetics and gentle yet consistent mixing are critical.

Key Features

• IP43-rated enclosure with seamless waterproof control panel and tactile membrane keypad—enables safe operation under humid or wet-hand conditions per IEC 60529 standards.
• Dual independent temperature sensor system: primary sensor for control, secondary sensor positioned at lower bath level for low-fluid detection; automatic shutdown triggered if ΔT ≥ 15 °C between sensors—preventing dry-run damage.
• Multi-tiered safety architecture: configurable sample-sensitive temperature limit alarm, hard upper temperature cutoff at 105 °C, and distinct audible tones for each fault condition (e.g., low level, overtemperature, sensor failure).
• Self-diagnostic firmware that identifies and displays error codes (e.g., “E03: heater open circuit”, “E12: pump stall”) on the LED interface—reducing troubleshooting time and supporting preventive maintenance planning.
• Corrosion-resistant construction: mirror-polished 316 stainless steel inner bath, welded seamless design, and high-efficiency stainless steel heating coil—ensuring long-term integrity in saline, buffered, or mildly acidic solutions.
• User-calibratable temperature system: built-in offset adjustment function allows end-users to perform traceable calibration against NIST-traceable reference thermometers without service intervention.

Sample Compatibility & Compliance

The WS20 accommodates standard laboratory vessels—including Erlenmeyer flasks (up to 2 L), test tubes (13–25 mm OD), separatory funnels, and custom racks—via optional mounting accessories (e.g., universal flask clamps, floating evaporation shields, and perforated stainless steel lids). Its temperature stability of ±0.2 °C at setpoint meets ASTM E145 Class II requirements for gravity-convection thermal uniformity and supports ISO/IEC 17025 method validation protocols. The device complies with EN 61010-1:2019 for electrical safety in laboratory equipment and incorporates hardware-level safeguards aligned with FDA 21 CFR Part 11 data integrity principles when used with optional PC software (audit trail enabled, user access levels configurable).

Software & Data Management

Equipped with an RS232 serial interface, the WS20 supports bidirectional communication with Windows-based WIGGENS TempControl Suite v3.x—enabling remote parameter setting, real-time temperature logging, programmable ramp-hold profiles, and CSV export for LIMS integration. Optional Wi-Fi module (WLAN-WS20) enables secure TLS-encrypted status monitoring via browser-based dashboard—allowing lab managers to verify operational status, receive email/SMS alerts on alarm events, and review historical temperature logs without physical access. All logged data include timestamps, operator ID (if authenticated), and environmental metadata—satisfying ALCOA+ principles for regulated environments.

Applications

• Cell culture expansion and suspension maintenance under defined thermal and agitation conditions.
• Enzyme kinetics assays requiring precise temperature stabilization during continuous mixing.
• Standardization of dissolution media preparation (e.g., USP Apparatus I/II pre-conditioning).
• Accelerated stability testing of biologics and small-molecule formulations in aqueous matrices.
• Biochemical extraction protocols (e.g., protein solubilization, polysaccharide leaching) demanding thermal homogeneity and shear-controlled agitation.
• Calibration of temperature-sensitive sensors and reference standards using stable bath immersion.

FAQ

Is the WS20 suitable for use with organic solvents?

No. The WS20 is engineered exclusively for aqueous media. Use of flammable or corrosive organic solvents (e.g., acetone, chloroform, DMSO) voids warranty and violates IEC 61010-1 safety classification.
Can the oscillation frequency be programmed independently of temperature?

Yes. Shaking speed (20–200 rpm) and temperature setpoint are fully decoupled parameters—both adjustable in real time via front-panel controls or remote software.
Does the unit support external temperature probe input for sample-specific feedback?

No. The WS20 relies solely on internal bath sensors. For sample-core temperature monitoring, users must integrate third-party PT100 probes with external dataloggers.
What is the recommended maintenance interval for the circulation pump?

The brushless DC pump is rated for >20,000 hours MTBF and requires no scheduled lubrication or replacement under normal operating conditions—consistent with the “lifetime maintenance-free” design claim.
Is GLP-compliant audit trail functionality available?

Yes—when operated with WIGGENS TempControl Suite and WLAN-WS20 module, full electronic records including user actions, parameter changes, alarms, and calibration events are stored with digital signatures and tamper-proof timestamps.