Cole-Parmer Glas-Col Flexible Fabric Heating Mantle Model 36225-00

Overview

The Cole-Parmer Glas-Col Flexible Fabric Heating Mantle (Model 36225-00) is a precision-engineered thermal management solution designed for controlled, uniform heating of laboratory glassware under non-contact conditions. Unlike rigid ceramic or metal heating mantles, this system employs high-purity, woven glass-fiber fabric with integrated resistive heating elements—engineered to deliver consistent surface temperature distribution across complex vessel geometries. The mantle operates on the principle of convective and conductive heat transfer through low-thermal-mass insulation, minimizing thermal lag and enabling rapid response to setpoint adjustments. Its maximum operational temperature of 450 °C (842 °F) supports applications ranging from solvent reflux and reaction kinetics studies to gentle evaporation and crystallization protocols. Designed for integration into ISO/IEC 17025-compliant laboratories, the unit meets UL 61010-1 safety requirements for electrical laboratory equipment and is constructed to withstand repeated thermal cycling without delamination or hot-spot formation.

Key Features

• Fully flexible, conformable glass-fiber fabric construction enables secure, shape-adaptive wrapping around spherical, round-bottom, conical, and multi-neck flasks—eliminating air gaps that cause uneven heating.
• Two distinct configurations: hemispherical (36225-xx series) for round-bottom flasks and full-spherical (36226-xx series) with continuous zipper closure for complete 360° coverage of single-, double-, or triple-neck vessels.
• Hollow-type variants (e.g., 36226-80–36226-87) feature side-access openings for unobstructed access to necks during heating—critical for inert-atmosphere reactions or inline sampling.
• Integrated thermal cutoff protection prevents overheating when used with compatible temperature controllers (e.g., Cole-Parmer CN7700 series); operation requires external solid-state relay or PID controller for precise ramp/soak profiling.
• Steel expansion support stand (36225-80, sold separately) provides stable, elevated mounting via ring stand compatibility—prevents direct contact between heated mantle and metal framework, mitigating thermal stress on both components.
• Low-power consumption (140 W typical for 250–500 mL variants) and Class H insulation rating ensure long service life and energy-efficient operation in continuous-use environments.

Sample Compatibility & Compliance

The 36225-00 platform accommodates a comprehensive range of ASTM-standard laboratory vessels: round-bottom flasks (50–5000 mL), Erlenmeyer flasks (50–6000 mL), Büchner funnels (60245–60248), separatory funnels (Squibb/Globe types, 250–6000 mL), and specialized geometries including 60° filter funnels and volumetric flasks. Each size-specific variant is calibrated to match nominal vessel dimensions per ASTM E200–22 (Standard Practice for Preparation, Standardization, and Storage of Standard Solutions). The fabric’s dielectric strength (>3 kV/mm) and flame-retardant treatment comply with IEC 60695-11-10 for fire hazard testing. When paired with validated temperature controllers and documented calibration procedures, the system supports GLP and GMP workflows requiring audit-ready traceability per FDA 21 CFR Part 11 (electronic records/signatures) and ISO 17025 clause 6.4.3 (equipment verification).

Software & Data Management

While the mantle itself is a passive heating element, its performance is fully leveraged through integration with Cole-Parmer’s programmable temperature controllers (e.g., CN7700, DTA2000) featuring RS-485 Modbus RTU or Ethernet/IP interfaces. These controllers enable automated thermal profiles—including multi-step ramps, dwell times, and cooling compensation—with real-time data logging at user-defined intervals (0.1–60 s resolution). Audit trails record operator ID, timestamp, setpoint changes, and deviation alerts—meeting ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate) for regulated environments. Optional software packages (e.g., WinCon™) provide CSV export, statistical process control (SPC) charts, and PDF report generation compliant with ISO/IEC 17025 clause 7.8.2 (reporting of results).

Applications

• Controlled reflux of organic solvents (e.g., toluene, THF) in synthetic chemistry workflows where localized overheating must be avoided.
• Viscosity-sensitive processes such as polymer dissolution or nanoparticle dispersion, where thermal gradients induce shear-induced aggregation.
• Distillation setups requiring precise bath temperature control adjacent to condenser inlets to prevent vapor lock.
• Gentle drying of hygroscopic or thermolabile compounds in Büchner or Hirsch funnels without cracking or sintering.
• Extraction protocols using separatory funnels containing viscous phases (e.g., glycerol/water mixtures), where neck heating prevents valve clogging.
• Crystallization induction studies requiring sub-ambient to 450 °C thermal windows with ±1 °C stability over 24-hour durations.

FAQ

Is the 36225-00 heating mantle compatible with standard laboratory ring stands?
Yes—when used with the optional steel expansion support stand (Cat. No. 36225-80), which features a heat-resistant fabric basket and adjustable clamping geometry for universal ring stand integration.
Can this mantle be used for heating under inert atmosphere?
Yes—the hollow-type variants (36226-80 series) allow unimpeded access to flask necks for septum insertion, gas inlet/outlet tubing, and pressure monitoring ports.
Does the mantle require calibration?
Per ISO/IEC 17025, the heating element itself does not require periodic calibration; however, the external temperature controller and sensor (e.g., PT100 probe immersed in thermal oil bath) must undergo annual verification per accredited procedures.
What safety certifications does this product hold?
UL 61010-1 (3rd Edition), CE marked per EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU, and RoHS 3 compliant (2015/863/EU).
Is it suitable for use with corrosive reagents?
The glass-fiber fabric is chemically inert to most organic solvents and dilute acids/bases; however, direct exposure to concentrated HF, molten alkalis, or chlorine-based oxidizers is prohibited due to potential fiber degradation.