CZGY HDM-6×250AS Six-Station Digital Temperature-Controlled & Speed-Controlled Magnetic Stirring Heating Mantle

Overview

The CZGY HDM-6×250AS is a six-channel digital magnetic stirring heating mantle engineered for precise, simultaneous thermal and mechanical agitation of multiple liquid samples in research, quality control, and teaching laboratories. It operates on the principle of resistive heating via embedded Ni-Cr alloy resistance wire, insulated with high-purity, alkali-free glass fiber—ensuring rapid thermal response, uniform heat distribution, and flameless operation. Each of the six semi-spherical heating zones features independent digital PID temperature control and digitally regulated DC magnetic stirring, enabling reproducible reaction conditions across parallel experiments. Designed for compatibility with standard 250 mL round-bottom flasks, the system supports applications requiring controlled thermal activation (e.g., reflux, dissolution, synthesis, extraction) combined with consistent mixing—without direct contact between heating elements and glassware, minimizing thermal stress and breakage risk.

Key Features

• Six isolated heating/stirring stations with individual digital displays for real-time monitoring of temperature and rotational speed
• High-stability PID temperature control with ±1 °C accuracy across the full 30–300 °C operating range
• Brushless DC motor drive delivering smooth, low-noise stirring from 0 to 2000 rpm (±1 rpm resolution), with programmable timer up to 999 minutes per channel
• Alkali-free glass fiber insulation ensures excellent dielectric strength, thermal stability, and long service life—even under repeated thermal cycling
• Integrated grounding terminal and over-temperature protection circuitry comply with IEC 61010-1 safety requirements for laboratory electrical equipment
• Lightweight, ergonomic mantle design facilitates easy flask placement and removal; non-slip base enhances positional stability during extended operation

Sample Compatibility & Compliance

The HDM-6×250AS accommodates standard 250 mL borosilicate glass round-bottom flasks (e.g., ASTM E287, ISO 1042 compliant). Its flameless, contactless heating architecture eliminates localized hot spots and reduces risk of thermal shock—critical for sensitive reagents or volatile solvents. The unit meets basic electrical safety standards for laboratory use (IEC 61010-1:2010, Class I, Pollution Degree 2). While not certified for hazardous location (ATEX/IECEx) or cleanroom environments, it is routinely deployed in GLP-aligned academic and industrial labs for method development, stability testing, and small-scale process optimization where traceability and repeatability are prioritized. Users must ensure proper grounding and ambient humidity below 80% RH to maintain insulation integrity.

Software & Data Management

This analog-digital hybrid instrument does not feature onboard data logging or PC connectivity. All operational parameters—including setpoint temperature, actual temperature, stirring speed, and elapsed time—are displayed locally via six independent dual-digit LED screens. For regulatory environments requiring audit trails (e.g., FDA 21 CFR Part 11 or ISO/IEC 17025), users are advised to pair the unit with external calibrated thermocouple probes and third-party data acquisition systems. Manual recording protocols remain fully compatible with standard lab notebook practices and electronic lab notebook (ELN) integration workflows.

Applications

• Simultaneous heating and stirring of multiple reaction mixtures in organic synthesis, polymerization, and catalytic studies
• Dissolution testing per USP and Ph. Eur. 2.9.3 protocols using standardized flask geometry
• Sample preparation for spectroscopy, chromatography, and titration—ensuring homogeneity prior to analysis
• Environmental sample digestion (e.g., EPA Method 3050B pre-treatment) under controlled thermal ramping
• Pharmaceutical formulation development, including excipient blending and active ingredient dispersion studies
• Teaching laboratory demonstrations of Arrhenius kinetics, equilibrium dynamics, and heat transfer principles

FAQ

Is the HDM-6×250AS suitable for use with flammable solvents?
Yes—provided appropriate ventilation (e.g., fume hood), grounding, and adherence to NFPA 30 guidelines. The absence of open flame and surface temperatures limited to ≤300 °C reduce ignition risk relative to hot plates.
What maintenance is required to sustain insulation performance?
Avoid exposure to moisture. If dampness occurs, activate each station at 60 °C for 30 minutes before normal use to restore dielectric resistance. Inspect glass fiber housing annually for abrasion or carbonization.
Can stirring speed and temperature be programmed independently per station?
Yes—each of the six channels has fully independent digital controls for both parameters, with no cross-talk or shared microprocessor constraints.
Does the unit support RS-232 or USB communication?
No. It is a stand-alone analog-digital instrument without serial or network interfaces.
What is the recommended warm-up procedure for first-time use?
Gradually ramp temperature to 100 °C in 20 °C increments, pausing 5 minutes at each step until white smoke (from residual binder volatilization) ceases. Then proceed to operational setpoints.