Introduction
A ducted fume hood is a laboratory ventilation and safety device that protects the operator from hazardous fumes, vapors, gases, and particulates generated during laboratory work by drawing contaminated air away from the work area and exhausting it to the outside of the building through a duct system, and it is a critical safety component in laboratories that handle chemicals. The fume hood consists of an enclosed work chamber with a transparent sash at the front that can be raised and lowered to control the opening, an exhaust plenum at the back or top of the chamber, and an airflow system that draws room air into the hood through the front opening and exhausts it through ductwork to the exterior by means of a blower; the inward airflow at the face of the hood captures and removes contaminants generated inside the chamber, preventing them from escaping into the laboratory and protecting the operator, and the exhaust air is discharged safely away from building air intakes. Ducted fume hoods are used in chemistry, biology, pharmaceutical, forensic, and industrial laboratories for working with hazardous chemicals, volatile solvents, acids, bases, and toxic or odorous substances, and they require connection to the building ventilation system, a suitable blower, and proper ductwork, and they are available in various widths, configurations, and materials, with features such as airflow monitoring, face velocity indicators, sash alarms, and corrosion-resistant liners. With their effective containment and exhaust capability, ducted fume hoods are essential for safe laboratory work with hazardous substances, and they must be installed, used, and maintained in accordance with laboratory safety standards.
Ducted Fume Hood LFH-T2012
Ducted Fume Hood features external dimensions of 1500 × 800 × 2350 mm and internal dimensions 1250 × 630 × 1150 mm. Its inlet wind speed ranges from 0.3 to 0.8 m/s, ensuring efficien...
Ducted Fume Hood LFH-T2013
Ducted Fume Hood is a microprocessor controlled Ducted Fume Hood with built in centrifugal blower. It has maximum opening of 520 mm and 9 levels air speed exhaust blower. Equipped with a...
Ducted Fume Hood LFH-T2010
Ducted Fume Hood delivers 600 to 1200 m³/h airflow for efficient and reliable fume extraction. It maintains low vibration levels of ≤ 5 µm across the 10Hz to 10kHz range for stable op...
Ducted Fume Hood LFH-T2011
Ducted Fume Hood is a microprocessor controlled Ducted Fume Hood with built in centrifugal blower. It has maximum opening of 520 mm and 9 levels air speed exhaust blower. Equipped with a...
Ducted Fume Hood LFH-T2013
Ducted Fume Hood has an overall size of 1800×850×2350 mm and an internal workspace of 1560×680×1150 mm. It is made with 5 mm thick compact grade laminate and includes a baffle fixed ...
Ducted Fume Hood LFH-T2012
Ducted Fume Hood is a microprocessor controlled ducted Fume Hood with built in centrifugal blower which removes toxic gases to the outside of the working environment. The Fume Hood mater...
Ducted Fume Hood LFH-T2010
Ducted Fume Hood is a microprocessor controlled ducted Fume Hood with built in centrifugal blower which removes toxic gases to the outside of the working environment. The Fume Hood mater...
Ducted Fume Hood LFH-T2011
Ducted Fume Hood is a microprocessor controlled ducted Fume Hood with built in centrifugal blower which removes toxic gases to the outside of the working environment. The Fume Hood mater...
Ducted Fume Hood LFH-T2013
Ducted Fume Hood features a 600 to 1200 m³/h adjustable airflow system for effective ventilation. It comes with a noise level of ≤ 62 dB(A), ensuring quiet operation in lab environment...
Ducted Fume Hood LFH-T2011
Ducted Fume Hood is a premium laboratory fume hood built for safe, efficient handling of hazardous chemicals, toxic fumes, and volatile substances across pharmaceutical, chemical researc...
Ducted Fume Hood LFH-T2012
Ducted Fume Hood is a microprocessor controlled ducted Fume Hood with built in centrifugal blower which removes toxic gases to the outside of the working environment. The Fume Hood mater...
Ducted Fume Hood LFH-T2010
Ducted Fume Hood is a microprocessor controlled ducted Fume Hood with built in centrifugal blower which removes toxic gases to the outside of the working environment. The Fume Hood mater...
Standards
ASHRAE 110-Method of Testing Performance of Laboratory Fume Hoods
Complies with the above standards, but is not limited to them.
Features
1. Ducted fume hood for ventilated containment of hazardous chemical fumes and vapors.
2. Connected to building exhaust system for removal of contaminated air.
3. Suitable for chemical, pharmaceutical, biological and industrial laboratory use.
4. Precision airflow design with proper face velocity for operator protection.
5. Includes hood enclosure, sash, work surface, airflow monitor and lighting.
FAQ
Q1: What testing scenarios is this hood mainly applied to?
A: The ducted fume hood is used in chemical laboratories, pharmaceutical research, industrial quality control, academic institutions and healthcare facilities to provide ventilated containment for procedures involving hazardous chemicals, volatile solvents, toxic fumes, dusts and aerosols. It supports chemical synthesis and reaction setup, solvent handling and evaporation, sample preparation with hazardous reagents, pharmaceutical compounding, industrial quality control testing, and educational chemistry demonstrations. The ducted design exhausts contaminated air to the outside through the building ventilation system, providing reliable operator protection. It is essential for any laboratory handling hazardous chemicals, where the fume hood is the primary engineering control protecting workers from inhalation exposure to toxic, flammable or corrosive fumes, vapors and particulates during chemical manipulation, synthesis, sample preparation and testing in chemical, pharmaceutical, biological and industrial laboratory environments.
Q2: What standards does the fume hood comply with?
A: The ducted fume hood is designed with reference to ANSI AIHA Z9.5 for laboratory ventilation, ASHRAE 110 for fume hood performance testing, and relevant GB standards for laboratory fume hoods. Face velocity and containment performance should be verified after installation. The hood complies with relevant safety standards including proper airflow and sash design.
Q3: What is the warranty period for the whole machine and key components?
A: The whole fume hood is covered by a 12-month warranty. The enclosure, sash, work surface, airflow monitor and lighting are covered, while filters, gaskets and bulbs are consumables or accessories. Damage from improper chemical use or unauthorized modification is excluded.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation requires trained laboratory personnel familiar with fume hood safety and chemical handling. We provide an operation manual and remote guidance. Proper sash position, equipment placement, airflow verification and chemical handling are important for effective containment. Professional installation and commissioning are essential.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular calibration required? What is the recommended calibration cycle?
A: Face velocity verification and containment testing should be performed annually or after any modification to the exhaust system. Airflow monitoring devices should be calibrated according to the manufacturer schedule. Routine filter replacement and gasket inspection follow the maintenance plan. Sash and counterweight mechanism checked periodically.
Q7: Are supporting consumables universal?
A: Filters, gaskets, lighting and airflow monitor parts are available from the supplier or qualified vendors. Exhaust system components may be facility-specific. Long-term maintenance cost depends on usage intensity and chemical types handled.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes interior dimensions, airflow type, material grade, exhaust capacity, utility connections and safety features. Custom orders require site survey and technical specification exchange. Users should provide chemical types, equipment dimensions and ventilation requirements before design.
Q9: Does the purchase include on-site installation and commissioning service?
A: Yes, ducted fume hoods include on-site installation, commissioning and face velocity verification by qualified technicians. Operator training and safety briefing are typically included. The exact service scope should be confirmed in the contract. Site preparation guidance is provided before delivery.
Q10: What types of chemicals are compatible with this equipment?
A: The ducted fume hood handles chemicals and equipment within the design specifications and exhaust capacity. Highly toxic, carcinogenic or radioactive materials may require additional containment features or dedicated hoods. Perchloric acid and other special chemicals require dedicated hood designs with washdown systems. Users should verify chemical compatibility with interior materials and exhaust system, ensure proper sash position and airflow during operation, avoid overcrowding the hood interior, and have the hood tested annually for face velocity and containment performance. The building exhaust system must be properly sized and maintained for effective hood performance.
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