ChemTron TM Series Cylindrical Reaction Flask Heating Mantles

Overview

The ChemTron TM Series Cylindrical Reaction Flask Heating Mantles are engineered for precise, uniform, and controllable conductive heating of standard single-wall cylindrical glass reactors and round-bottom flasks. Unlike radiant or oil-bath heating methods, these mantles deliver direct thermal coupling via flexible silicone-rubber–encased resistive wire elements, ensuring rapid thermal response and minimal axial or radial temperature gradients across the flask surface. Designed specifically for compatibility with common laboratory cylindrical vessels—particularly those equipped with bottom discharge valves—the TM series features an optional bottom-access cutout configuration (designated “hole” variants) that accommodates valve stems without compromising thermal integrity or mechanical stability. Each unit integrates passive convection cooling at the mantle base and is constructed with high-temperature silicone rubber (continuous service up to 220 °C) and Class H insulation, enabling sustained operation under demanding synthetic, distillation, or extraction workflows.

Key Features

• Uniform heat distribution across full cylindrical contact surface—validated by ASTM E2251-22 thermal mapping protocols
• Dual-stage thermal protection: bimetallic snap-action cutoff (195 °C) + independent electronic overtemperature limiter (210 °C)
• Modular sizing: five standard capacities (500–3000 mL) with consistent external diameter (191 mm) for bench-space optimization
• Bottom-hole variants (e.g., TM565 hole) enable unobstructed integration with jacketed or valved single-wall reactors per DIN 12575 specifications
• CE-certified electromagnetic compatibility (IEC 61000-6-3) and RoHS 2011/65/EU compliance for use in regulated GxP environments
• Pre-wired 1.2 m IEC 60320 C13 locking cable ensures secure connection to temperature controllers or PID-regulated power supplies

Sample Compatibility & Compliance

The TM Series is validated for use with borosilicate 3.3 glass reaction vessels conforming to ISO 3585 and ASTM E438 Type I Class A specifications. All models support flasks with maximum outer diameter of 117 mm and varying heights (64–254 mm internal depth). Bottom-hole configurations maintain ≥92% effective heating surface area while accommodating stem diameters up to 25 mm—ideal for GL45-threaded discharge valves per DIN 15888. Units meet electrical safety requirements per IEC 61010-1:2010 (Measurement Category II, Pollution Degree 2) and are suitable for installation in laboratories operating under ISO/IEC 17025-accredited quality systems. No calibration certificate is supplied as a standard item; however, traceable NIST-traceable calibration reports are available upon request for GLP/GMP applications.

Software & Data Management

As standalone analog heating devices, the TM mantles do not incorporate embedded firmware or digital interfaces. They are intended for use with external temperature controllers (e.g., Eurotherm 2404, Omega CN7800) supporting 4–20 mA or 0–10 V analog setpoint inputs. When integrated into automated systems compliant with FDA 21 CFR Part 11, the heating mantle functions as a field device within a validated control loop—requiring documented IQ/OQ protocols for controller-mantle pairing. Audit trail generation, electronic signatures, and data archiving responsibilities reside solely with the connected controller or SCADA system; the mantle itself provides no local data storage or network connectivity.

Applications

• Controlled heating of solvent-based reactions in single-wall cylindrical reactors during API synthesis
• Distillation setups requiring stable, gradient-free wall temperatures for improved fraction purity (per USP <1058>)
• Extraction processes involving heat-sensitive botanical matrices (e.g., supercritical CO₂ pre-heating stages)
• Viscosity measurement sample conditioning prior to Brookfield or Anton Paar rheometer analysis
• Long-duration reflux operations where thermal drift must remain <±0.5 °C over 8+ hours (verified per ISO 17025 internal method validation)

FAQ

Can the TM heating mantle be used with double-jacketed reactors?
No—TM mantles are designed exclusively for single-wall cylindrical or round-bottom flasks. Double-jacketed vessels require circulating fluid heating systems compatible with external chiller/heater units.
Is the bottom-hole variant compatible with PTFE-lined valves?
Yes, provided the valve stem outer diameter does not exceed 25 mm and the mounting flange conforms to DIN 15888 dimensions.
What is the maximum ambient temperature rating for continuous operation?
The mantles are rated for continuous use in ambient environments up to 40 °C (IEC 60068-2-14), with derating required above this threshold per manufacturer’s technical bulletin TB-TM-2023-01.
Do TM models support DIN 12575 mounting clamps?
Yes—all external dimensions are aligned with DIN 12575 mechanical interface standards, allowing direct attachment to universal lab frame clamps.
Are replacement heating elements available as spare parts?
Yes, ChemTron offers certified replacement heater assemblies (P/N HEAT-TM-REPL) with full traceability documentation for GMP-regulated facilities.