Heating Mantle for 250mL Round‑bottom Flask (HF250)

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The Heating Mantle for 250mL Round‑bottom Flask (HF250) is a dedicated, form‑fitting electric heating mantle engineered for safe, uniform, and efficient heating of 250 mL round‑bottom flasks in pharmaceutical research, chemical synthesis, analytical chemistry, and educational laboratories. With a precision‑machined inner diameter of 89.75 mm for optimal thermal contact, this heating mantle provides a maximum temperature of 450 °C and a typical power consumption of 150 W, making it ideal for distillation, reflux, solvent evaporation, and general laboratory heating applications.

Heating Mantle for 250mL Round‑bottom Flask (HF250) features a robust fiberglass heating chamber embedded with nichrome heating wire, providing excellent heat exchange and uniform temperature distribution across the flask surface. The fiberglass mesh insulation minimises heat build‑up on the outside surface, keeping the external housing at a safe temperature and protecting the user from burns while also enhancing thermal efficiency for energy conservation. The precisely contoured 89.75 mm inner diameter perfectly matches 250 mL flask dimensions, delivering optimal thermal contact and reliable performance for various laboratory heating applications requiring flask‑based setups.

Key user‑focused features include uniform heat distribution across the flask wall which prevents localized overheating and ensures reproducible results; fiberglass insulation that keeps the external housing at a safe temperature; chemical and thermal resistant housing that withstands laboratory spills; and a precisely contoured design that securely holds the flask in place while providing clear visibility of the top half of the flask during operation. The hemispherical heating chamber maintains direct contact with the glassware for efficient heat transfer.

For the research scientist, pharmaceutical chemist, and laboratory technician, the Heating Mantle for 250mL Round‑bottom Flask (HF250) delivers the safe, uniform, and efficient heating required for chemical synthesis, distillation, reflux, extraction, and sample digestion. For the patient, reliable and reproducible heating ensures that pharmaceutical research, clinical testing, and educational training are conducted with consistent and accurate thermal conditions, directly supporting effective drug development, reliable diagnostic protocols, and the training of future medical laboratory professionals.

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Description

Heating Mantle for 250mL Round‑bottom Flask (HF250)

PRIMARY CLINICAL & DIAGNOSTIC USES

1. Uniform, Contoured Heating for Chemical Synthesis and Organic Reactions
Primary Use:Heating Mantle for 250mL Round‑bottom Flask (HF250) Provides a dedicated electric heating mantle specifically designed to accommodate a 250mL round‑bottom flask, featuring a precision‑engineered inner diameter of 89.75 mm to ensure optimal thermal contact and uniform heat distribution, used for controlled heating in laboratory applications such as chemical synthesis, organic reactions, and pharmaceutical research, with a maximum operating temperature of 450 °C and power consumption appropriately scaled for 250mL capacity.

How it helps: For the research scientist and laboratory technician, the HF250‘s form‑fitting design matches the curvature of the flask, providing secure flask placement and maximizing heat efficiency for energy conservation. The durable construction with a rigid outer housing ensures long‑term reliability even with repeated use. The precisely contoured 89.75 mm inner diameter ensures optimal heat transfer for various laboratory heating applications requiring flask‑based setups. For the patient undergoing pharmaceutical drug development or clinical research, reliable and uniform heating ensures consistent experimental conditions, leading to reproducible research outcomes that directly support safe and effective medication development.

2. Controlled Digestion, Reflux, and Distillation for Analytical Chemistry
Primary Use:Heating Mantle for 250mL Round‑bottom Flask (HF250) Used for the controlled heating, refluxing, and distillation of chemical samples in a 250mL round‑bottom flask, ideal for analytical chemistry workflows including sample digestion, organic synthesis, solvent recovery, and purification protocols in clinical research and quality control laboratories.

How it helps: For the analytical chemist, the fiberglass heating element provides excellent heat transfer properties and uniform temperature distribution across the flask surface, preventing localized overheating that can degrade samples. The hemispherical design of the heating chamber maintains direct contact with the glassware for efficient heat transfer while leaving the top half of the flask easily visible during operation. The unit serves as an ideal alternative to traditional Bunsen burners for heating round‑bottom flasks, with uniform heat distribution and reliable performance. For the patient, accurate sample preparation and consistent heating during analytical testing support reliable results in clinical research and pharmaceutical quality control, contributing to patient safety.

3. Distillation and Solvent Recovery in Pharmaceutical Research
Primary Use: Enables efficient and uniform heating for distillation setups requiring a 250mL round‑bottom flask, commonly used in pharmaceutical research for solvent recovery, purification of reaction products, isolation of volatile compounds, and reflux procedures where prolonged heating is essential for reaction completion.

How it helps: For the pharmaceutical research scientist, the Heating Mantle for 250mL Round‑bottom Flask (HF250) provides a safe and stable heating solution for distillation and reflux workflows. The heating element is completely embedded within the fiberglass housing, which not only prevents sparking in volatile environments but also protects the user from accidental burns. Reflux distillation is a core separation technique used across chemical synthesis, purification protocols, and extraction systems, with pharmaceutical synthesis applications including esterification, hydrolysis, and polymerization reactions where prolonged heating and solvent recovery are essential for reaction completion and yield optimisation. For the patient, the isolation and purification of active pharmaceutical ingredients using reliable heating equipment ensures the purity and safety of final drug products.

4. Heating in Educational and Teaching Laboratories
Primary Use: Serves as a safe, reliable, and intuitive heating tool for organic chemistry synthesis and general laboratory research, providing uniform heating for reaction vessels, extraction procedures, and other thermal processes in academic and industrial laboratories.

How it helps: For the teaching instructor and research scientist, the simple plug‑and‑play operation and robust fiberglass construction make it ideal for daily laboratory use. The unit is designed to be used with an external voltage regulator or temperature controller for precise heating control, and the outer housing remains at a safe temperature during operation thanks to fiberglass mesh insulation that minimises heat build‑up on the outside surface. For the patient, reliable heating equipment in research laboratories accelerates the development of new diagnostics and therapeutics, ultimately benefiting patient care.

SECONDARY & SUPPORTIVE USES

1. Boiling point determination for analytical chemistry: Securely heats up to 250 mL of sample to a boil or to a specific sub‑boiling temperature within a round‑bottom flask to accurately determine boiling points of Newtonian and non‑Newtonian fluids while providing an unobstructed view of the fluid.

2. Solvent evaporation and concentration: Gently heats solvents in a 250 mL round‑bottom flask to remove volatile components and concentrate non‑volatile analytes, widely used in environmental analysis, food safety testing, and pharmaceutical formulation development.

3. Extraction procedures in natural product research: Provides uniform heating for Soxhlet extraction and other liquid‑solid extraction techniques using a 250 mL round‑bottom flask, commonly employed in natural product isolation and phytochemical analysis from plant material for new drug discovery.

4. Reaction monitoring in chemical synthesis: Heats chemical reaction mixtures in a 250 mL round‑bottom flask to specific temperatures for kinetic studies, reaction optimization, and process development in academic research and industrial chemistry.

5. Thermal stability testing of materials and chemicals: Heats small‑volume samples in a 250 mL round‑bottom flask to assess thermal stability, decomposition temperatures, or heat‑induced property changes, with uniform heating and clear observation of the sample for quality control testing.

6. General and educational laboratory heating: Serves as a versatile, user‑friendly heating tool for demonstrating the principles of distillation, reflux, and organic synthesis in university chemistry and biology laboratory courses, with safe fiberglass insulation and intuitive operation for benchtop‑sized experiments.

KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A dedicated electric heating mantle designed specifically for 250 mL round‑bottom flasks.
Designation: Heating Mantle for 250mL Round‑bottom Flask (HF250), DLAB HF250, Product No. 18900828.
Key Components:
- Rigid outer metal housing (steel sheet) with durable finish for heat and chemical resistance
- Inner heating chamber consisting of hand‑knitted, non‑asbestos fiberglass embedded with nichrome wire heating element
- Precision‑machined inner diameter of 89.75 mm, specifically contoured for 250mL round‑bottom flasks
- Fiberglass mesh insulation for minimal heat build‑up on outside surface
- Two‑wire power cord with external plug
- Designed for use with external voltage regulator or temperature controller (sold separately)

2. TECHNICAL & PERFORMANCE PROPERTIES

Capacity: 250 mL round‑bottom flask (standard fitting)
Inner diameter of heating chamber: 89.75 mm – precision‑matched for optimal thermal contact
Maximum heating temperature: Approximately 450 °C
Power consumption: Approximately 150 W
Rated voltage: 110/120 V or 220/230 V AC, 50/60 Hz (depending on model)
Heating element: Nichrome wire or nickel‑chrome alloy resistance wire embedded in fiberglass
Insulation material: Fiberglass mesh and ceramic wool
Housing material: Steel or aluminum with durable powder‑coated finish for chemical resistance
Heating chamber design: Hemispherical, contoured to match round‑bottom flask curvature for maximum surface contact
External dimensions (outer): Approximately φ220 mm × 170 mm (depending on model)
Weight: Approximately 1.4–2.5 kg depending on model
Operating conditions: 5–40 °C, ≤80% relative humidity
Controller compatibility: Requires external voltage regulator or temperature controller for precise temperature regulation (not included)

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Durable steel or aluminum housing with a durable powder‑coated finish that provides excellent heat and chemical resistance, ensuring long‑term reliability in demanding laboratory environments
Form factor: Single‑vessel, hemispherical shape contoured to precisely fit 250 mL round‑bottom flasks, allowing the top half of the flask to remain visible during operation for easy observation
Heating element: High‑quality nichrome wire heating element embedded in fiberglass, providing excellent heat exchange properties and uniform temperature distribution
Thermal insulation: Fiberglass mesh insulation minimises heat build‑up on the outside surface, keeping the external housing at a safe temperature and protecting the user from burns, while also enhancing thermal efficiency for energy conservation
Operation: Simple operation when connected to an external controller; designed for continuous operation
Placement: Designed to sit directly on a laboratory benchtop or fireproof mat; base remains cool to touch if properly ventilated
Portability: Compact benchtop heater weighing approximately 1.4–2.5 kg, easily movable between workstations
Maintenance: Virtually maintenance‑free; if fiberglass chamber becomes contaminated, the whole unit may need replacement

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: General laboratory equipment for in vitro diagnostic (IVD) use; CE marked and complies with applicable laboratory safety standards
Burn Hazard Prevention: Thick layer of fiberglass insulation keeps external housing temperature at a safe level for a 450 °C‑rated heater; the durable powder‑coated metal housing provides additional thermal protection
Electrical Safety: Heating element completely embedded inside fiberglass chamber with no exposed metal inside the heating cavity; design resists arcing and electrochemical contamination in volatile environments
Chemical Spill Resistance: Fiberglass heating chamber is chemically resistant and will absorb small chemical spills without short‑circuiting the heating element; the powder‑coated metal housing also resists chemical damage
Sample Containment: The heating mantle itself secures the flask in place; the hemispherical design helps contain the glassware and safely contains the flask in the event of a glass crack or chemical spill
Over‑Temperature Protection: Not built into the base unit; requires an external voltage regulator or temperature controller for over‑temperature protection; always use with appropriate controller to prevent overheating
Thermal Efficiency: 360° fiberglass wrap with ceramic wool insulation provides superior thermal efficiency, greatly reducing the total wattage needed to bring 250 mL of liquid to a boil

5. STORAGE & HANDLING ATTRIBUTES

Storage: Store in a clean, dry, dust‑free environment at room temperature when not in use. Do not leave any glassware inside the heating mantle during storage. The heating mantle should be stored in a dry, clean environment for long‑term reliability.
Cleaning: Unplug the unit and allow it to cool completely before cleaning. Wipe the metal housing with a soft, slightly damp cloth using mild detergent. Clean the surface of the heating mantle regularly to remove dust and stains. Do not immerse the unit in liquid. If the inner fiberglass chamber becomes contaminated, do not attempt to clean it; the whole unit may need replacement.
Pre‑use inspection: Before each use, inspect the power cord and plug for any damage. Check circuits and connections regularly to make sure nothing is loose or worn. Ensure the fiberglass chamber is intact and free of chemical residues. Confirm that the heating mantle is connected to a grounded power source to prevent electric shock.
Installation: Place the Heating Mantle for 250mL Round‑bottom Flask (HF250) on a stable, level, non‑flammable benchtop away from flammable materials, volatile solvents, combustible gases, or paper products. Allow at least 10 cm clearance on all sides for heat dissipation. Do not use heating jackets in flammable or explosive environments. Do not use near water baths or sinks. Ensure adequate clearance from walls and other objects as specified in the safety guidelines.
Flask selection: Use only standard 250 mL round‑bottom flasks (borosilicate glass such as Pyrex or Kimax) designed to withstand the operating temperature up to 450 °C. Ensure the flask is dry and free of cracks before inserting into the heating mantle. The 89.75 mm inner diameter is specifically designed for a snug and secure fit. Avoid setting the heating jacket to an excessively high temperature to avoid potential danger.
Operation with external controller: The HF250 must be used with an external voltage regulator or temperature controller to avoid the risk of overheating. Connect the HF250 to the external controller, then plug the controller into a grounded 110/120 V or 220/230 V AC, 50/60 Hz outlet. Turn on the power and gradually increase the heating intensity to the desired level. The temperature controller is essential for safe operation and is not included with the base unit.
Temperature monitoring: For precise temperature control, insert an optional thermocouple or thermistor probe between the flask and the fiberglass chamber or directly into the liquid. Do not allow the probe to contact the heating element directly.
Cooling down: After use, turn off the power and allow the heating mantle to cool completely with the flask still inside (or remove the flask carefully using heat‑resistant gloves). Cooling time may take 30–60 minutes depending on operating temperature. Do not handle the flask or heating mantle until they have sufficiently cooled.
Periodic verification: Verify temperature performance periodically using a calibrated external thermometer. Check the container you are using is suitable for heating in a heating mantle. If the flask no longer fits snugly or if heating is uneven, replace the unit.

6. LABORATORY & CLINICAL APPLICATIONS

Primary Application: Controlled heating of chemical and biological samples in a 250 mL round‑bottom flask for chemical synthesis, distillation, reflux, extraction, and general research in pharmaceutical development, analytical chemistry, organic chemistry, and educational laboratories.
Clinical Role: An essential instrument for pharmaceutical research and development laboratories, clinical research facilities, analytical chemistry departments, organic synthesis labs, and educational institutions. Critical for drug discovery, sample digestion, solvent recovery, reaction optimisation, and teaching fundamental chemical techniques.

SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

Burn Hazard: The heating mantle can reach 450 °C and remains hot for an extended period after power is turned off. Do not touch the fiberglass chamber or metal housing during or immediately after use. Use heat‑resistant gloves when inserting or removing flasks. Allow the unit to cool completely before cleaning or storing.
Fire Hazard: Do not operate the heating mantle near flammable materials, volatile solvents, combustible gases, or paper products. Do not use heating jackets in flammable or explosive environments. Keep the work area clear of flammable substances. Do not leave the instrument unattended while operating at high temperatures.
Electrical Safety: Do not operate with wet hands. Make sure the heating jacket is connected to a grounded power source to prevent electric shock. Disconnect the power cord before cleaning or servicing. Use only the supplied grounded power cord and ensure proper grounding. Do not operate if the power cord is damaged.
Chemical Compatibility: The fiberglass chamber is chemically resistant but may degrade over time with repeated exposure to strong acids or bases. Use appropriate spill containment. Refer to Safety Data Sheets (SDS) for specific chemicals.
Flask Selection: Use only standard 250 mL borosilicate glass round‑bottom flasks rated for the operating temperature. Do not use cracked or damaged flasks. Ensure the flask is properly seated inside the heating mantle (inserted to the full depth for maximum surface contact) before turning on the power. Make sure the container you are using is suitable for heating in a heating mantle.
Thermal Shock: Do not place a cold flask directly into a pre‑heated heating mantle, as thermal shock may cause the glass to crack or shatter. Allow the flask and heating mantle to heat up together gradually.
Vessel Removal: Always turn off the power and allow the heating mantle to cool before removing the flask. If immediate removal is necessary, use heat‑resistant gloves and flask tongs. Never touch the flask with bare hands.
External Controller Requirement: The Heating Mantle for 250mL Round‑bottom Flask (HF250) must be used with an external voltage regulator or temperature controller. Operating the unit at full power without a controller can cause dangerously high temperatures, damage the heating element, and create a fire hazard.
Regular Maintenance: Regularly check the wires and other parts of your heating jacket to make sure they are in good working order. Conduct periodic inspections to identify any loose connections or worn components.
Training Requirement: Only trained laboratory personnel with appropriate technical background should operate the HF250 Heating Mantle for clinical diagnostic or research applications. Users should read and understand the operator’s manual before first use. Heating mantles are indispensable tools in many laboratory settings, but their safe use requires vigilance and adherence to best practices.

2. FIRST AID MEASURES

Burn from Hot Surface: If skin contacts the hot flask, fiberglass chamber, or metal housing, immediately cool the burn area with cool (not cold) running water for at least 15 minutes. Do not apply ice directly. Cover the burn with a sterile, non‑adhesive dressing. Seek medical attention for large area burns, deep burns, or burns causing blistering.
Fire: If a fire occurs on or near the heating mantle, immediately turn off the power if safe to do so. Use a class ABC dry chemical fire extinguisher or carbon dioxide (CO₂) extinguisher. Do not use water on electrical fires. Evacuate the area if the fire cannot be immediately controlled.
Chemical Splash to Eyes: If a heated chemical sample splashes into the eyes, immediately flush eyes with copious amounts of cool water or sterile saline for at least 15 minutes. Seek immediate medical attention.
Chemical Splash to Skin: Remove contaminated clothing immediately. Flush the affected skin area with cool running water for at least 15 minutes. Seek medical evaluation for chemical burns. Refer to the Safety Data Sheet (SDS) for the specific chemical involved.
Inhalation of Fumes: If fumes from heated chemicals are inhaled, move the affected person to fresh air immediately. Seek immediate medical attention if breathing is difficult.
Electrical Shock: Disconnect power at the circuit breaker before attempting to assist the victim. Do not touch the victim until power is disconnected. Call emergency medical services immediately.

3. FIRE FIGHTING MEASURES

Flammability: The fiberglass chamber is non‑flammable, but the outer metal housing, power cord, and internal wiring are combustible. The primary fire hazard is the flammable chemicals being heated. Avoid setting the heating jacket to an excessively high temperature to avoid danger.
Extinguishing Media: Use carbon dioxide (CO₂), dry chemical (ABC class), or alcohol‑resistant foam extinguishers for fires involving electrical components or nearby flammable materials. Do not use water on electrical fires.
Fire Response: Immediately disconnect power to the instrument if safe to do so. Evacuate the immediate area. Use an appropriate fire extinguisher for small, contained fires. For larger fires, evacuate the laboratory and call emergency services.
Special Protective Equipment for Firefighters: Firefighters should wear self‑contained breathing apparatus (SCBA) and full structural firefighting gear when fighting fires in laboratory settings, as combustion products may include toxic fumes from burning plastics and chemicals.

Heating Mantle for 250mL Round‑bottom Flask (HF250)

Heating Mantle for 250mL Round‑bottom Flask (HF250)

PRIMARY CLINICAL & DIAGNOSTIC USES

SECONDARY & SUPPORTIVE USES

2. Solvent evaporation and concentration: Gently heats solvents in a 250 mL round‑bottom flask to remove volatile components and concentrate non‑volatile analytes, widely used in environmental analysis, food safety testing, and pharmaceutical formulation development.

4. Reaction monitoring in chemical synthesis: Heats chemical reaction mixtures in a 250 mL round‑bottom flask to specific temperatures for kinetic studies, reaction optimization, and process development in academic research and industrial chemistry.

5. Thermal stability testing of materials and chemicals: Heats small‑volume samples in a 250 mL round‑bottom flask to assess thermal stability, decomposition temperatures, or heat‑induced property changes, with uniform heating and clear observation of the sample for quality control testing.

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A dedicated electric heating mantle designed specifically for 250 mL round‑bottom flasks.

Designation: Heating Mantle for 250mL Round‑bottom Flask (HF250), DLAB HF250, Product No. 18900828.

Key Components:

Rigid outer metal housing (steel sheet) with durable finish for heat and chemical resistance

Inner heating chamber consisting of hand‑knitted, non‑asbestos fiberglass embedded with nichrome wire heating element

Precision‑machined inner diameter of 89.75 mm, specifically contoured for 250mL round‑bottom flasks

Fiberglass mesh insulation for minimal heat build‑up on outside surface

Two‑wire power cord with external plug

Designed for use with external voltage regulator or temperature controller (sold separately)

2. TECHNICAL & PERFORMANCE PROPERTIES

Capacity: 250 mL round‑bottom flask (standard fitting)

Inner diameter of heating chamber: 89.75 mm – precision‑matched for optimal thermal contact

Maximum heating temperature: Approximately 450 °C

Power consumption: Approximately 150 W

Rated voltage: 110/120 V or 220/230 V AC, 50/60 Hz (depending on model)

Heating element: Nichrome wire or nickel‑chrome alloy resistance wire embedded in fiberglass

Insulation material: Fiberglass mesh and ceramic wool

Housing material: Steel or aluminum with durable powder‑coated finish for chemical resistance

Heating chamber design: Hemispherical, contoured to match round‑bottom flask curvature for maximum surface contact

External dimensions (outer): Approximately φ220 mm × 170 mm (depending on model)

Weight: Approximately 1.4–2.5 kg depending on model

Operating conditions: 5–40 °C, ≤80% relative humidity

Controller compatibility: Requires external voltage regulator or temperature controller for precise temperature regulation (not included)

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Durable steel or aluminum housing with a durable powder‑coated finish that provides excellent heat and chemical resistance, ensuring long‑term reliability in demanding laboratory environments

Form factor: Single‑vessel, hemispherical shape contoured to precisely fit 250 mL round‑bottom flasks, allowing the top half of the flask to remain visible during operation for easy observation

Heating element: High‑quality nichrome wire heating element embedded in fiberglass, providing excellent heat exchange properties and uniform temperature distribution

Thermal insulation: Fiberglass mesh insulation minimises heat build‑up on the outside surface, keeping the external housing at a safe temperature and protecting the user from burns, while also enhancing thermal efficiency for energy conservation

Operation: Simple operation when connected to an external controller; designed for continuous operation

Placement: Designed to sit directly on a laboratory benchtop or fireproof mat; base remains cool to touch if properly ventilated

Portability: Compact benchtop heater weighing approximately 1.4–2.5 kg, easily movable between workstations

Maintenance: Virtually maintenance‑free; if fiberglass chamber becomes contaminated, the whole unit may need replacement

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: General laboratory equipment for in vitro diagnostic (IVD) use; CE marked and complies with applicable laboratory safety standards

Burn Hazard Prevention: Thick layer of fiberglass insulation keeps external housing temperature at a safe level for a 450 °C‑rated heater; the durable powder‑coated metal housing provides additional thermal protection

Electrical Safety: Heating element completely embedded inside fiberglass chamber with no exposed metal inside the heating cavity; design resists arcing and electrochemical contamination in volatile environments

Chemical Spill Resistance: Fiberglass heating chamber is chemically resistant and will absorb small chemical spills without short‑circuiting the heating element; the powder‑coated metal housing also resists chemical damage

Sample Containment: The heating mantle itself secures the flask in place; the hemispherical design helps contain the glassware and safely contains the flask in the event of a glass crack or chemical spill

Over‑Temperature Protection: Not built into the base unit; requires an external voltage regulator or temperature controller for over‑temperature protection; always use with appropriate controller to prevent overheating

Thermal Efficiency: 360° fiberglass wrap with ceramic wool insulation provides superior thermal efficiency, greatly reducing the total wattage needed to bring 250 mL of liquid to a boil

5. STORAGE & HANDLING ATTRIBUTES

Storage: Store in a clean, dry, dust‑free environment at room temperature when not in use. Do not leave any glassware inside the heating mantle during storage. The heating mantle should be stored in a dry, clean environment for long‑term reliability.

Temperature monitoring: For precise temperature control, insert an optional thermocouple or thermistor probe between the flask and the fiberglass chamber or directly into the liquid. Do not allow the probe to contact the heating element directly.

Periodic verification: Verify temperature performance periodically using a calibrated external thermometer. Check the container you are using is suitable for heating in a heating mantle. If the flask no longer fits snugly or if heating is uneven, replace the unit.

6. LABORATORY & CLINICAL APPLICATIONS

Primary Application: Controlled heating of chemical and biological samples in a 250 mL round‑bottom flask for chemical synthesis, distillation, reflux, extraction, and general research in pharmaceutical development, analytical chemistry, organic chemistry, and educational laboratories.

1. SAFETY PRECAUTIONS

Chemical Compatibility: The fiberglass chamber is chemically resistant but may degrade over time with repeated exposure to strong acids or bases. Use appropriate spill containment. Refer to Safety Data Sheets (SDS) for specific chemicals.

Thermal Shock: Do not place a cold flask directly into a pre‑heated heating mantle, as thermal shock may cause the glass to crack or shatter. Allow the flask and heating mantle to heat up together gradually.

Vessel Removal: Always turn off the power and allow the heating mantle to cool before removing the flask. If immediate removal is necessary, use heat‑resistant gloves and flask tongs. Never touch the flask with bare hands.

Regular Maintenance: Regularly check the wires and other parts of your heating jacket to make sure they are in good working order. Conduct periodic inspections to identify any loose connections or worn components.

2. FIRST AID MEASURES

Fire: If a fire occurs on or near the heating mantle, immediately turn off the power if safe to do so. Use a class ABC dry chemical fire extinguisher or carbon dioxide (CO₂) extinguisher. Do not use water on electrical fires. Evacuate the area if the fire cannot be immediately controlled.

Chemical Splash to Eyes: If a heated chemical sample splashes into the eyes, immediately flush eyes with copious amounts of cool water or sterile saline for at least 15 minutes. Seek immediate medical attention.

Chemical Splash to Skin: Remove contaminated clothing immediately. Flush the affected skin area with cool running water for at least 15 minutes. Seek medical evaluation for chemical burns. Refer to the Safety Data Sheet (SDS) for the specific chemical involved.

Inhalation of Fumes: If fumes from heated chemicals are inhaled, move the affected person to fresh air immediately. Seek immediate medical attention if breathing is difficult.

Electrical Shock: Disconnect power at the circuit breaker before attempting to assist the victim. Do not touch the victim until power is disconnected. Call emergency medical services immediately.

3. FIRE FIGHTING MEASURES

Flammability: The fiberglass chamber is non‑flammable, but the outer metal housing, power cord, and internal wiring are combustible. The primary fire hazard is the flammable chemicals being heated. Avoid setting the heating jacket to an excessively high temperature to avoid danger.

Extinguishing Media: Use carbon dioxide (CO₂), dry chemical (ABC class), or alcohol‑resistant foam extinguishers for fires involving electrical components or nearby flammable materials. Do not use water on electrical fires.

Fire Response: Immediately disconnect power to the instrument if safe to do so. Evacuate the immediate area. Use an appropriate fire extinguisher for small, contained fires. For larger fires, evacuate the laboratory and call emergency services.

Special Protective Equipment for Firefighters: Firefighters should wear self‑contained breathing apparatus (SCBA) and full structural firefighting gear when fighting fires in laboratory settings, as combustion products may include toxic fumes from burning plastics and chemicals.

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2. Solvent evaporation and concentration: Gently heats solvents in a 250 mL round‑bottom flask to remove volatile components and concentrate non‑volatile analytes, widely used in environmental analysis, food safety testing, and pharmaceutical formulation development.

4. Reaction monitoring in chemical synthesis: Heats chemical reaction mixtures in a 250 mL round‑bottom flask to specific temperatures for kinetic studies, reaction optimization, and process development in academic research and industrial chemistry.

5. Thermal stability testing of materials and chemicals: Heats small‑volume samples in a 250 mL round‑bottom flask to assess thermal stability, decomposition temperatures, or heat‑induced property changes, with uniform heating and clear observation of the sample for quality control testing.

Device Type: A dedicated electric heating mantle designed specifically for 250 mL round‑bottom flasks.

Precision‑machined inner diameter of 89.75 mm, specifically contoured for 250mL round‑bottom flasks

Capacity: 250 mL round‑bottom flask (standard fitting)

Inner diameter of heating chamber: 89.75 mm – precision‑matched for optimal thermal contact

Maximum heating temperature: Approximately 450 °C

Power consumption: Approximately 150 W

Rated voltage: 110/120 V or 220/230 V AC, 50/60 Hz (depending on model)

External dimensions (outer): Approximately φ220 mm × 170 mm (depending on model)

Weight: Approximately 1.4–2.5 kg depending on model

Operating conditions: 5–40 °C, ≤80% relative humidity

Form factor: Single‑vessel, hemispherical shape contoured to precisely fit 250 mL round‑bottom flasks, allowing the top half of the flask to remain visible during operation for easy observation

Portability: Compact benchtop heater weighing approximately 1.4–2.5 kg, easily movable between workstations

Burn Hazard Prevention: Thick layer of fiberglass insulation keeps external housing temperature at a safe level for a 450 °C‑rated heater; the durable powder‑coated metal housing provides additional thermal protection

Thermal Efficiency: 360° fiberglass wrap with ceramic wool insulation provides superior thermal efficiency, greatly reducing the total wattage needed to bring 250 mL of liquid to a boil

Primary Application: Controlled heating of chemical and biological samples in a 250 mL round‑bottom flask for chemical synthesis, distillation, reflux, extraction, and general research in pharmaceutical development, analytical chemistry, organic chemistry, and educational laboratories.

Chemical Splash to Eyes: If a heated chemical sample splashes into the eyes, immediately flush eyes with copious amounts of cool water or sterile saline for at least 15 minutes. Seek immediate medical attention.

Chemical Splash to Skin: Remove contaminated clothing immediately. Flush the affected skin area with cool running water for at least 15 minutes. Seek medical evaluation for chemical burns. Refer to the Safety Data Sheet (SDS) for the specific chemical involved.