DRETOP TDK-XB54 Wide-Temperature Circulating Water Bath

Overview

The DRETOP TDK-XB54 Wide-Temperature Circulating Water Bath is an engineered constant-temperature thermal platform designed for precise, stable, and reproducible heating applications in analytical, biochemical, pharmaceutical, and materials science laboratories. Operating on resistive immersion heating with closed-loop PID temperature regulation, the unit maintains thermal uniformity across its 54 L stainless steel bath chamber via an integrated external circulation pump—enabling consistent heat transfer to auxiliary equipment such as jacketed reactors, condensers, or sample holders. Its operational range (RT + 5 °C to 100 °C) supports a broad spectrum of standardized procedures including ASTM E29–23 (precision temperature control), ISO 17025–2017 (calibration traceability), and USP (thermal validation for pharmaceutical stability studies). The system is not intended for cryogenic operation or active cooling; refrigeration capability requires optional R-series add-on modules.

Key Features

• Microprocessor-based PID temperature controller with LED display, offering 0.1 °C resolution and programmable timer (1–9999 min) for unattended operation.
• 304 stainless steel inner tank and lid, electrostatically coated outer housing, and multi-layer water-insulated chamber design for corrosion resistance, thermal efficiency, and leak prevention.
• Sealed immersion heater with direct bath contact ensures minimal thermal lag and high energy conversion efficiency—reducing power consumption while maintaining ±0.3 °C temperature stability under steady-state conditions.
• Integrated external circulation pump generates controlled flow to external devices, minimizing thermal stratification and supporting uniform temperature distribution within connected systems (e.g., reactor jackets).
• Dual safety architecture: real-time water level sensing prevents dry-run operation; over-temperature cutoff halts heating at user-defined upper limits, with audible alarm and automatic recovery upon reset.
• Power-fail memory retention preserves setpoints and timing parameters during unexpected outages, ensuring continuity in GLP/GMP-compliant workflows.

Sample Compatibility & Compliance

The TDK-XB54 accommodates aqueous and low-viscosity organic media—including distilled water, deionized water (≥Grade III per ISO 3696), and glycol-water mixtures—within its 54 L working volume. It is incompatible with highly corrosive solvents (e.g., concentrated acids, halogenated hydrocarbons) or volatile flammable liquids unless used inside certified fume hoods with appropriate ventilation interlocks. The device complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets CE marking requirements for EMC (EN 61326-1) and low-voltage directive (2014/35/EU). Optional RS485 interface enables integration into centralized lab monitoring systems compliant with FDA 21 CFR Part 11 audit-trail requirements when paired with validated communication software.

Software & Data Management

While the base TDK-XB54 operates via standalone front-panel control, optional accessories expand its digital functionality: a 30-segment programmable temperature controller allows time-temperature profile execution (e.g., ramp-hold-cool sequences); RS485 serial interface supports Modbus RTU protocol for remote parameter setting, real-time temperature logging, and alarm status polling. When deployed with validated third-party SCADA or LIMS platforms, the unit supports electronic record generation meeting ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). Firmware updates are performed locally via USB port; no cloud connectivity is embedded in standard configuration.

Applications

• Thermal conditioning of biological reagents prior to enzymatic assays or cell culture preparation (e.g., pre-warming media at 37 °C).
• Supporting reflux distillation, solvent evaporation, and concentration processes requiring stable bath temperatures between 40–95 °C.
• Providing uniform heating to jacketed glass reactors during chemical synthesis, polymerization, or crystallization trials.
• Calibrating temperature-sensitive probes and sensors against NIST-traceable reference standards using bath immersion protocols.
• Accelerated stability testing per ICH Q1A(R3), where samples undergo controlled thermal stress at defined setpoints over extended durations.
• Assisting in material testing standards such as ASTM D2122 (heat distortion temperature) or ISO 75–1 (deflection temperature under load).

FAQ

Is the TDK-XB54 suitable for use with flammable solvents?
No. Only non-flammable, low-volatility aqueous or glycol-based fluids are recommended. Flammable liquids require explosion-proof certified alternatives.
Does the unit include refrigeration capability?
No. The TDK-XB54 is heating-only. For sub-ambient operation, select the R-series variant or integrate an external chiller via the circulation port.
What is the maximum permissible flow rate for external circulation?
Rated at ≤15 L/min at 0.2 MPa backpressure; actual performance depends on tubing diameter, length, and connected device thermal load.
Can the bath be validated for GxP environments?
Yes—when equipped with optional RS485 and validated software, it supports IQ/OQ documentation, calibration traceability, and electronic audit trails per FDA 21 CFR Part 11.
What maintenance is required to ensure long-term accuracy?
Monthly descaling with citric acid solution (if using tap water), quarterly verification of temperature sensor output against a calibrated reference thermometer, and annual inspection of circulation pump seals and gaskets.