RE-300B Precision Metal Bath (German-Sourced, CE-Compliant)

Overview

The RE-300B Precision Metal Bath is a CE-certified, German-sourced laboratory heating platform engineered for stable, uniform thermal control in demanding analytical and preparative workflows. Unlike conventional water baths, the RE-300B employs a solid aluminum heating block with integrated temperature-sensing elements and high-efficiency 1300 W resistive heating—enabling rapid thermal ramping (typically <15 min from ambient to 95 °C) and exceptional temperature stability (±0.2 °C at setpoint, measured at 37 °C and 60 °C per ISO 17025 traceable calibration protocol). Its design prioritizes operational safety and integration flexibility: the electropolished 316 stainless steel chamber resists corrosion from aqueous buffers, organic solvents, and mild acids; the low-thermal-conductivity housing maintains external surface temperatures below 45 °C under continuous operation; and the dual-stage dry-run protection system (mechanical float switch + electronic thermal cutoff) prevents heater activation when block volume falls below 0.8 L—critical for unattended use with rotary evaporators or parallel synthesis reactors.

Key Features

• Electropolished 316 stainless steel heating block with seamless welds and radiused corners—ensuring ISO Class 5-compatible cleanability and resistance to chloride-induced pitting
• Dual-mode temperature control: PID-regulated analog feedback loop with digital setpoint override and ±0.1 °C resolution display
• Integrated dry-run safeguard compliant with IEC 61010-1 Clause 8.3.3 for protection against thermal runaway during solvent evaporation
• Optimized thermal mass distribution: 3.5 L usable cavity volume supports up to six 50 mL round-bottom flasks or four 100 mL vessels simultaneously while maintaining ±0.3 °C inter-vessel uniformity (per ASTM E1112 test method)
• Low-profile footprint (260 × 280 mm) and rear-mounted power inlet—designed for under-fume-hood installation or benchtop integration with vacuum manifolds and condenser systems

Sample Compatibility & Compliance

The RE-300B accommodates standard laboratory glassware including round-bottom flasks (14/20 to 29/32 joints), culture tubes (13–18 mm OD), and microcentrifuge tube racks (0.2–2.0 mL). Its non-porous metal block eliminates cross-contamination risks associated with porous water bath inserts and enables validated cleaning protocols using 70% ethanol, 1% sodium hypochlorite, or vapor-phase hydrogen peroxide (VPHP). The unit meets EN 61326-1 (EMC) and EN 61010-1 (safety) requirements for Class I, Pollution Degree 2 environments. It is routinely deployed in GLP-compliant QC labs performing USP compounding support, ASTM D86 distillation pre-heating, and ISO 11737-1 bioburden sample incubation—where audit-ready thermal consistency and hardware traceability are mandatory.

Software & Data Management

While the RE-300B operates as a standalone analog/digital hybrid instrument, its RS-232 interface (optional accessory) supports connection to LabVIEW™, MATLAB®, or custom SCADA systems for time-stamped temperature logging, remote setpoint adjustment, and event-triggered alerts (e.g., dry-run activation, over-temperature fault). All firmware versions include built-in audit trail functionality compliant with FDA 21 CFR Part 11 Annex 11 requirements: user authentication, immutable parameter change logs, and electronic signature-capable export of CSV-formatted thermal profiles. Calibration certificates (NIST-traceable Pt100 sensor verification) are supplied with each unit and remain valid for 12 months under normal usage conditions.

Applications

• Pre-heating solvent reservoirs and receiving flasks in rotary evaporation systems (compatible with Buchi R-300, IKA RV 10, and Heidolph Hei-VAP series)
• Controlled-temperature enzymatic digestions (e.g., restriction enzyme incubations at 37 °C or 50 °C)
• Thermal equilibration of HPLC mobile phase reservoirs to minimize baseline drift
• Accelerated stability testing per ICH Q1A(R3) guidelines using multi-point temperature ramping protocols
• Supporting ASTM D93 (Pensky-Martens flash point) and ASTM D86 (distillation range) sample conditioning

FAQ

Is the RE-300B suitable for use with flammable solvents?

Yes—when operated within its specified temperature range (≤95 °C) and installed in accordance with local fire codes (e.g., NFPA 45), its sealed heating block and absence of open water surfaces eliminate ignition pathways common in traditional water baths.
Can the unit be calibrated in-house?

Yes—using a NIST-traceable reference thermometer (e.g., Fluke 1523 with 0.02 °C uncertainty), users may perform two-point verification (25 °C and 75 °C) following the procedure outlined in the Operator Manual Section 4.2.
What maintenance is required to sustain thermal accuracy?

Annual verification of sensor linearity and heater response time is recommended; no routine lubrication or consumable replacement is required due to the solid-state thermal architecture.
Does the RE-300B support external temperature probes for sample monitoring?

Not natively—but the RS-232 port enables third-party integration with external Pt100 or thermocouple inputs via programmable logic controllers (PLCs) or data acquisition modules.