Memmert WTB Advanced Water Bath

Overview

The Memmert WTB Advanced Water Bath is an engineered thermal stabilization platform designed for precise, reproducible temperature control in laboratory and industrial environments. Based on Memmert’s decades-long heritage in high-accuracy temperature instrumentation, the WTB implements a robust Peltier-assisted heating system combined with advanced PID-controlled circulation dynamics to maintain uniform thermal distribution across the bath chamber. Its operational principle relies on forced convection via integrated impeller-driven water circulation, ensuring ±0.1 °C temperature homogeneity (at 37 °C) and long-term stability of ≤±0.05 °C over 24 hours — performance validated per DIN 12879 and ISO/IEC 17025-accredited calibration protocols. The unit is intended for applications requiring stable thermal conditioning without mechanical agitation, including dissolution testing support, viscosity standard preparation, sensor reference calibration, and pre-incubation of heat-sensitive formulations such as ointments, emulsions, nutrient broths, and polymer-based substrates.

Key Features

• Capacitive touchscreen interface with intuitive icon-based navigation and multi-language support (EN, DE, FR, ES, CN)
• CustomView™ dynamic dashboard — user-definable display layout showing real-time setpoint, actual temperature, elapsed time, alarm status, and calibration history
• Dual-point temperature calibration capability (e.g., at 25 °C and 60 °C), traceable to NIST-traceable reference probes; supports internal verification logging
• 304 stainless steel tank with seamless, radius-optimized corners (R ≥ 15 mm) for full wetting and residue-free cleaning — compliant with ISO 15190:2020 laboratory safety requirements
• Integrated rapid-drain valve enabling complete emptying within <90 seconds; compatible with floor-level drainage or external collection vessels
• Modular mounting architecture accommodating standardized accessory interfaces — supports DIN 12879-compliant lid configurations, ISO 8573-1 Class 3 air-dry platforms, and GMP-grade tube rack inserts

Sample Compatibility & Compliance

The WTB accommodates samples in glass, polypropylene, and borosilicate containers up to 300 mm in height and 200 mm in diameter. Its open-bath geometry permits unrestricted access for immersion probes, PT100 sensors, and reference thermometers during qualification (IQ/OQ/PQ). The unit meets IEC 61010-1:2010 safety standards for laboratory equipment and carries CE marking under the EU Machinery Directive 2006/42/EC. For regulated environments, it supports 21 CFR Part 11-compliant electronic records when paired with Memmert’s optional LabSoft Connect software — providing audit trails, user role management, and digital signature functionality required for GLP and GMP workflows.

Software & Data Management

While the WTB operates autonomously via its embedded controller, optional integration with Memmert LabSoft Connect (v4.2+) enables remote monitoring, data export (CSV, PDF, XML), and automated report generation. All temperature logs include timestamps, operator ID, environmental context tags (e.g., “calibration,” “routine operation”), and deviation flags aligned with ISO 17025 clause 7.7. Data integrity is preserved through write-protected memory partitions and SHA-256 hash validation of stored records. Firmware updates are delivered via encrypted USB key or TLS 1.2-secured Ethernet connection — fully auditable per Annex 11 guidelines.

Applications

• Pre-conditioning of pharmaceutical suspensions and semi-solids prior to rheological or particle size analysis
• Thermal equilibration of reference standards used in DSC, TGA, and viscometer calibration
• Stabilization of enzymatic reagents and cell culture media in QC laboratories
• Temperature verification of contact-type thermometers and RTD probes per ASTM E74 and ISO 9001:2015 clause 7.1.5.2
• Supporting accelerated stability studies (ICH Q1A) for topical dosage forms under controlled humidity-adjacent conditions
• Industrial sensor drift assessment and thermal offset correction in metrology labs

FAQ

Does the WTB support external temperature probe input for independent verification?
Yes — a dedicated Pt100 input port allows connection of an external reference sensor; values are displayed alongside internal readings and logged synchronously.
Is the touchscreen resistant to common lab solvents and disinfectants?
The Gorilla Glass®-reinforced panel complies with IP65 ingress protection and withstands repeated exposure to 70% ethanol, isopropanol, and quaternary ammonium solutions per EN ISO 10993-5 cytotoxicity testing.
Can the WTB be integrated into a centralized LIMS or MES environment?
Via optional RS485 Modbus RTU or Ethernet TCP/IP interface, enabling bidirectional communication with LabVantage, STARLIMS, or Siemens Desigo CC systems using documented register mapping.
What documentation is provided for regulatory submissions?
Factory-issued IQ/OQ templates, traceable calibration certificates (DAkkS-accredited where applicable), and a complete Design Qualification dossier per GAMP5 v5.2 are available upon order confirmation.