The Electric Heating Mantle WT-HM / WITH-HM is a standard laboratory heating apparatus designed for the uniform, direct heating of liquids in round-bottom flasks. It is an efficient alternative to traditional water or oil baths because it eliminates liquid residue. It also provides much higher operational temperatures than standard laboratory hot plates.
Core Technical Specifications
The configuration parameters of the standard model available via suppliers on Made-in-China include:
- Temperature Range: Room temperature up to 380 °C 716 °F.
- Vessel Capacity Range: Multi-variant availability spanning 100 mL, 250 mL, 500 mL, 1,000 mL, 2,000 mL, 3,000 mL, and 5,000 mL sizes.
- Housing Material: Durable, heat-resistant steel outer shell.
- Insulation Material: High-grade fiberglass or ceramic fiber to shield heat loss and maintain high energy efficiency.
- Warranty Profile: 1-year product manufacturing warranty.
Primary Applications
- Distillation & Evaporation: Consistent thermal distribution ensures precise boiling control for liquid mixtures.
- Organic Solvent Refluxing: Safe heating mechanism for volatile organic solvents like ethanol, minimizing open-flame risks.
- Sample Digestions: High heat capacity accommodates rapid analytical chemical preparation steps.
Operating Best Practices
- Strict Sizing Match: Ensure the round-bottom flask matches the specified mantle capacity exactly (e.g., use a 250 mL flask only in a 250 mL mantle cavity) to maintain maximum thermal surface area contact and prevent air gaps that cause glass fracturing.
- External Controller Integration: Unless equipped with an integrated analog dial, always connect the power supply through a variable voltage transformer (Variac) or external PID temperature controller to manually tune the electrical current safely.
- Active Fluid Content: Never apply power to an empty flask or a bone-dry heating socket. The high insulation efficiency can cause temperatures to rapidly spike, which can soften or deform standard borosilicate laboratory glassware.
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