Laboratory fume hood

Laboratory fume hood

Laboratory fume hood introduction

A laboratory fume hood is a type of ventilation system that primarily provides personal protection against toxic fumes, vapors, and dust. It works by containing and exhausting hazardous or noxious fumes away from the laboratory workspace, helping to maintain a safe environment.

Laboratory fume hood
Laboratory fume hood structures
  1. Cabinet body: made of PP porcelain white with a thickness of 8-12mm (inclusive), sore-resistant.
  2. Design of the plenum cabinet: the exhaust cabinet adopts top-shield exhaust, and is designed with 1 φ250mm/φ315mm air outlet. The flow plate is made of homogeneous PP material, and the acid-resistant back can withstand it.
  3.  The operating table is made of PP(other materials can be customized), and the acidity-free board can be provided.
  4. According to user requirements, the leaching surface is equipped with a water-resistant tank.
  5. Adjustable door glass: It is made of 5mm thick transparent acrylic glass, which is acid-resistant and incapable.
  6. Adjust the door frame: It is a thick porcelain white PP board with c-shaped grooves, embedded and combined to ensure safety and durability.
  7. Adjustable door suspension steel cable: each fume hood is connected by adjusting the door steel cable.
  8. Adjust the door balance weight: adopt a stepless weight box, its up-and-down stroke can avoid walking and avoid shaking.
  9. Switch: The switch button is self-locking with light, with washing machine, lighting switch, and main power switch.
  10. Lighting equipment: adopt full-cover three-proof lamps with 220v*20w*2 inside the lampshade
  11. Perforated part: Each fume hood is equipped with two 20A20V10A power sockets with an anti-surge cover.
Laboratory fume hood features
  1. Containment: The fume hood contains hazardous substances and prevents them from spreading into the laboratory.
  2. Airflow: A fume hood draws air from the laboratory and expels it outside, usually after passing it through a filtration system.
  3. Sash: The transparent front panel (sash) can be raised or lowered to provide access while minimizing exposure. Keeping the sash at the recommended height improves containment and protection.
  4. Work Surface: Inside the fume hood, there is a work surface where experiments can be conducted. It is often made of materials that are resistant to chemicals and heat.
  5. Exhaust System: The air inside the fume hood is pulled through ducts by fans and typically vented outside the building.
  6. Type—Ducted Fume Hoods: These hoods are connected to an external exhaust system and vent contaminants outside.
  7. Usage Guidelines:
    • Minimize Obstructions: Keep materials inside the fume hood to a minimum to ensure proper airflow.
    • Proper Sash Positioning: Use the sash as a shield and keep it at the recommended height.
    • Avoid Rapid Movements: Sudden movements can disrupt airflow and reduce the effectiveness of the fume hood.
    • Regular Maintenance: Ensure that the fume hood is regularly inspected and maintained to function effectively.
Laboratory fume hood applications
  1. Chemical Handling and Mixing:
    • Used when working with volatile, flammable, or toxic chemicals to contain fumes and vapors.
    • Protects users from exposure to harmful substances during experiments.
  2. Chemical Reactions:
    • Essential for conducting reactions that produce hazardous gases or vapors.
    • Containment prevents the spread of dangerous byproducts.
  3. Sample Preparation:
    • Used in preparing samples that may release harmful fumes or particulates.
    • Ensures that these substances are contained and do not affect the laboratory environment.
  4. Acid Digestion:
    • Utilized when handling strong acids or bases that can produce corrosive vapors.
    • Protects against inhalation and skin contact with these dangerous substances.
  5. Heat-generating Procedures:
    • Suitable for procedures that generate heat and fumes, such as heating chemicals.
    • Prevents the accumulation of flammable vapors and reduces the risk of fire.
  6. Biological Research:
    • Fume hoods can be used in biological research involving volatile or toxic chemicals.
    • Protects researchers from exposure to hazardous biological materials.
  7. Pharmaceutical Development:
    • Utilized in the preparation and handling of pharmaceutical compounds that can be hazardous.
    • Ensures a controlled environment for drug development processes.
  8. Toxicology Studies:
    • Used in studies involving toxic substances to prevent exposure and contamination.
    • Provides a safe environment for conducting toxicological research.
  9. Forensic Analysis:
    • Helps contain fumes and particulates when analyzing evidence that may be contaminated with hazardous substances.
    • Ensures the safety of forensic scientists.
  10. Nanotechnology Research:
    • Fume hoods are used to contain nanoparticles that may be harmful if inhaled.
    • Provides a controlled environment for manipulating nanomaterials.
  11. Educational Laboratories:
    • Widely used in academic settings for teaching students safe laboratory practices.
    • Ensures a safe learning environment when conducting experiments with hazardous materials.
laboratory fume hood

By providing effective containment and ventilation, laboratory fume hoods are essential for protecting personnel and maintaining a safe working environment in various scientific and industrial applications.

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