Laboratory Fume Hoods

Chromgate Laboratory Fume Hoods

The Chromgate Laboratory Fume Hood is a high-performance laboratory safety enclosure designed to provide effective protection for personnel while handling hazardous chemicals, fumes, vapours, gases, and other airborne contaminants.

Combining efficient airflow management with robust construction, the fume hood is designed to capture, contain, and exhaust airborne contaminants at the source, helping maintain a safer, cleaner, and more controlled laboratory working environment.

The fume hood incorporates an aerodynamically designed work chamber and exhaust arrangement to promote smooth and uniform airflow across the hood opening. During operation, the exhaust system maintains controlled negative pressure within the work chamber, drawing contaminated air away from the operator and discharging it through a suitably designed exhaust ducting and treatment system.

Chromgate Laboratory Fume Hoods can be designed with reference to applicable ASHRAE laboratory fume hood performance practices and relevant occupational safety requirements, subject to the selected configuration, airflow design, installation, and site-specific performance requirements.

Available Materials of Construction (MOC)

Understanding that laboratory applications vary considerably in terms of chemical exposure, corrosion resistance, hygiene, operating conditions, and budget, Chromgate Laboratory Fume Hoods are available in multiple construction options:

• CRCA / Mild Steel (MS) with high-quality chemical-resistant powder-coated finish
• Galvanized Iron (GI) with high-quality chemical-resistant powder-coated finish
• Polypropylene (PP) for applications involving highly corrosive chemicals and fumes
• Specialized Pre-Laminated / Laminated Board Construction for suitable general laboratory applications
• Fire Retardant Grade Construction for applications requiring enhanced resistance to flame spread, subject to the selected material specification

Inner Lining & Worktop Options

To suit different chemical, thermal, mechanical, and hygiene requirements, the fume hood can be provided with a variety of inner chamber lining and worktop materials, including:

Granite | Ceramic | Stainless Steel (SS-304 / SS-316) | Phenolic Resin | Polypropylene (PP)

The appropriate material can be selected according to the chemicals handled, operating temperature, corrosion exposure, cleaning requirements, and intended laboratory application.

Key Features & Benefits

• Designed for effective capture and containment of hazardous fumes, vapours, gases, and airborne contaminants
• Aerodynamically designed work chamber for smooth and controlled airflow
• Negative-pressure operation helps prevent contaminated air from escaping into the laboratory
• Multiple MOC options to suit different chemical environments and applications
• Wide selection of chemically resistant inner linings and worktops
• Robust and corrosion-resistant construction for long service life
• Ergonomically designed working area for convenient laboratory operation
• Provision for integration of water, gas, electrical, drainage, and other laboratory utilities, as required
• Suitable for connection to dedicated exhaust blowers, ducting, and scrubber systems
• Available in standard as well as customized dimensions and configurations
• Designed for convenient operation, inspection, cleaning, and maintenance
• Can be integrated with complete laboratory furniture and utility systems

Customization
Chromgate Laboratory Fume Hoods can be customized according to the laboratory layout, application, chemicals handled, required internal working dimensions, material of construction, worktop material, sash configuration, required airflow, exhaust capacity, utility requirements, ducting arrangement, scrubber requirement, and site conditions.

Complete systems can also be offered with exhaust blowers, ducting, dampers, wet/dry scrubbers, utility fittings, sinks, gas outlets, electrical sockets, support structures, and other associated accessories, depending on project requirements.

Note: Fume hood dimensions, MOC, worktop, inner lining, face velocity, exhaust airflow, blower capacity, duct size, utility arrangement, and other technical parameters should be selected according to the intended application, chemicals handled, applicable safety requirements, and final approved project specifications.

Floor Mounted / Walk-In Fume Hood
HSN Code: 841490

The Chromgate Floor Mounted Fume Hood, commonly referred to as a Walk-In Fume Hood, is designed to accommodate large, tall, or floor-standing laboratory apparatus that cannot be conveniently installed inside a conventional bench-mounted fume hood.

Unlike standard bench-mounted hoods, the enclosure extends close to floor level, providing substantial internal height for large experimental setups, pilot-scale equipment, reactors, and other oversized apparatus.

Key Features:-

• Floor-mounted configuration
• Large internal working height and volume
• Suitable for tall and oversized apparatus
• Horizontal sliding sash arrangement preferred for many configurations
• Telescopic / combination sash options, where appropriate
• Heavy-duty corrosion-resistant construction
• Dedicated high-capacity exhaust arrangement
• Suitable airflow control and balancing
• Optional airflow monitor and alarm
• Internal lighting and utility services, as required
• Customized dimensions according to equipment size and process requirements
• Wet/dry scrubber integration available where process conditions require exhaust treatment

Important Safety Consideration
The term “Walk-In Fume Hood” does not mean that personnel should enter the enclosure while hazardous processes are operating. The hood is intended to accommodate large equipment and apparatus.

Because floor-mounted hoods may have relatively large sash openings, airflow and containment performance must be carefully engineered according to the process, sash configuration, exhaust capacity, and hazard assessment.

CHROMGATE-Product Catalogue-2026

CHROMGATE-Product Catalogue-2026

Bench Mounted Laboratory Fume Hood
HSN Code: 841490

The Chromgate Bench Mounted Laboratory Fume Hood is a general-purpose containment enclosure designed to capture, contain, and exhaust hazardous fumes, vapours, gases, and airborne contaminants generated during laboratory procedures.

Installed directly over a laboratory bench or dedicated base cabinet, the hood provides an enclosed working chamber while allowing convenient access to experiments, apparatus, and laboratory utilities. The exhaust system maintains negative pressure within the work chamber, drawing contaminated air away from the operator and conveying it through the connected exhaust system.

The base section can incorporate modular storage cabinets and utility services according to laboratory requirements.

Available Standard Size
♦ L-1200 x D-950 x H-2300 mm
♦ L-1500 x D-950 x H-2300 mm
♦ L-1800 x D-950 x H-2300 mm
♦ L-2100 x D-950 x H-2300 mm

Key Features:-

• Bench-mounted containment enclosure
• Aerodynamically designed work chamber
• Controlled negative-pressure operation
• Vertical / horizontal / combination sash options
• Toughened glass sash for visibility and operator protection
• Suitable chemical-resistant inner lining and worktop
• Provision for water, gas, electrical, drainage, and other utilities
• Optional airflow monitor and low-airflow alarm
• Suitable internal lighting arrangement
• Connection to dedicated centrifugal exhaust blower and ducting
• Provision for integration with a Wet / Dry Scrubber System, where required
• Under-bench storage cabinets available
• Standard and customized dimensions

Typical Applications
Suitable for routine chemical handling, sample preparation, acid/solvent handling where compatible with the selected hood materials, digestion processes, laboratory reactions, and general chemical procedures requiring localized containment.

Note: Hood configuration, face velocity, exhaust volume, MOC, ducting, blower, and treatment system should be selected according to the chemicals handled, process hazards, and applicable laboratory safety requirements.

Low Bench Laboratory Fume Hood
HSN Code: 841490

The Chromgate Low Bench Fume Hood is designed for applications requiring a taller internal working chamber while maintaining the overall hood height within laboratory ceiling constraints.

By positioning the work surface lower than that of a conventional bench-mounted hood, additional internal vertical clearance can be achieved for tall apparatus, reactors, digestion assemblies, distillation setups, and other vertically oriented laboratory equipment.

Key Features:-

• Lower worktop elevation with increased internal working height
• Suitable for tall laboratory apparatus and assemblies
• Robust chemical-resistant construction
• Vertical / horizontal / combination sash arrangement, as applicable
• Dedicated exhaust connection
• Centrifugal blower selected according to required airflow and static pressure
• Optional wet/dry scrubber integration
• Adjustable airflow control damper
• Optional airflow monitoring and alarm system
• Internal lighting
• Electrical sockets and laboratory utility fittings, as required
• Customized dimensions according to equipment and ceiling height

Typical Applications
* Tall experimental assemblies
* Distillation apparatus
* Digestion equipment
* Laboratory reactors
* Pilot-scale laboratory apparatus
* Research and development setups
* Laboratories with restricted ceiling height

CHROMGATE-Product Catalogue-2026

CHROMGATE-Product Catalogue-2026

Perchloric Acid Fume Hood
HSN Code: 841490

The Chromgate Perchloric Acid Fume Hood is a specialized laboratory containment system intended specifically for procedures involving perchloric acid, where appropriate hazard assessment requires a dedicated hood.

Perchloric acid applications require special consideration because potentially hazardous perchlorate residues may accumulate within the hood and exhaust system. Accordingly, these hoods require specialized construction and a dedicated wash down arrangement designed to minimize residue accumulation.

Available Standard Size
♦ L-1200 x D-915 x H-2300 mm
♦ L-1500 x D-915 x H-2300 mm
♦ L-1800 x D-915 x H-2300 mm
♦ L-2100 x D-915 x H-2300 mm

Specialized Features:-

• Dedicated construction for perchloric acid applications
• Chemically compatible internal chamber
• Smooth, accessible internal surfaces
• Minimized joints, crevices, and inaccessible residue-collection areas
• Integrated wash-down system
• Wash-down provision for hood interior and applicable exhaust ductwork
• Suitable drainage and collection arrangement
• Dedicated exhaust ducting
• Dedicated exhaust blower selected for compatible service
• Suitable corrosion-resistant worktop and internal lining
• Airflow monitoring and alarm options
• Customized utility services

Critical Safety Requirement
A perchloric acid hood should use a dedicated exhaust system and should not be casually interconnected with conventional laboratory fume hood exhaust systems.

The complete system including the hood, wash down arrangement, ducting, blower, drainage, and discharge should be engineered according to the concentration and temperature of perchloric acid used, process conditions, risk assessment, and applicable safety requirements.

Educational / Demonstration Fume Hood
HSN Code: 841490

The Chromgate Educational / Demonstration Fume Hood is designed for teaching, training, and demonstration laboratories where both containment and enhanced visibility of experiments are important.

Unlike conventional fume hoods with predominantly opaque side panels, educational models can incorporate transparent side and/or rear viewing panels, enabling students and instructors to observe experiments from multiple positions while maintaining a controlled working enclosure.

Key Features:-

• Enhanced visibility for teaching and demonstrations
• Transparent side / rear viewing panels, as applicable
• Toughened safety glass or other suitable transparent material
• Aerodynamically designed working chamber
• Controlled negative-pressure operation
• Front sash for operator access
• Suitable chemical-resistant worktop
• Internal lighting
• Electrical sockets and laboratory utility fittings
• Airflow monitor / low-airflow alarm option
• Exhaust blower and ducting integration
• Mobile / fixed configurations, where applicable
• Customized dimensions for educational laboratories

Educational Benefits
The enhanced visibility enables instructors to demonstrate laboratory procedures while allowing groups of students to observe experiments without unnecessarily crowding the operator’s working position.

Typical Applications
* School Science Laboratories
* College Laboratories
* University Teaching Laboratories
* Chemistry Laboratories
* Research Training Laboratories
* Demonstration Laboratories
* Technical Training Institutes

The final hood configuration should still be selected according to the hazards of the experiments being performed; increased visibility does not replace appropriate containment and laboratory safety controls.

CHROMGATE-Product Catalogue-2026

CHROMGATE-Product Catalogue-2026

Laboratory Canopy Hood
HSN Code: 841490

The Chromgate Laboratory Canopy Hood is a localized exhaust device designed to capture heat, steam, light fumes, vapours, and rising process emissions from laboratory equipment and work areas.

The hood is generally installed above the emission source and can be wall mounted, ceiling mounted, or suspended, depending on the laboratory layout. It is connected through ducting to a suitable centrifugal exhaust blower to convey captured emissions to an appropriate discharge point.

Available MOC

• Polypropylene (PP)
• PP-FRP
• CRCA / MS Powder-Coated
• GI Powder-Coated
• SS-304
• SS-316, where required

Key Features:-

• Open-sided localized exhaust design
• Wall / ceiling / suspended mounting options
• Lightweight and robust construction
• Suitable for heat, steam, and compatible light-fume extraction
• Customized hood dimensions and exhaust connections
• Suitable ducting and airflow-control damper
• Centrifugal exhaust blower integration
• Optional exhaust treatment system

Typical Applications
* Heat-producing laboratory equipment
* Steam and vapour extraction
* Analytical instrument exhaust
* Hot plates and compatible process equipment
* Localized light-fume extraction

Important: A canopy hood is not a substitute for a laboratory chemical fume hood where operator containment of hazardous chemicals, toxic vapours, or high-risk processes is required.

Radioisotope Fume Hood
HSN Code: 841490

The Chromgate Radioisotope Fume Hood is a specialized containment enclosure designed for laboratory procedures involving radioactive materials, subject to the specific radionuclides, activity levels, physical forms, and radiological safety assessment.

The hood is designed to maintain controlled airflow and negative pressure to help contain airborne radioactive contamination generated during suitable laboratory procedures.

Key Features:-

• Controlled negative-pressure containment
• Smooth, non-porous, easy-to-decontaminate internal surfaces
• Suitable corrosion-resistant construction
• Minimal joints and crevices to facilitate decontamination
• Suitable worktop with raised / contained edges, where required
• Airflow monitoring and low-flow alarm
• Dedicated exhaust arrangement
• Suitable filtration where required by the radiological assessment
• Provision for differential pressure / airflow monitoring
• Specialized shielding provisions where specifically required
• Customized utility and service connections
• Easy-access construction for inspection and decontamination

Filtration & Shielding
HEPA filtration is not automatically appropriate for every radioactive application. Filtration should be selected according to whether the contaminant is particulate, gaseous, volatile, or another radioactive form.

Similarly, radiation shielding—such as lead or other shielding materials—should be determined by a qualified radiation-safety assessment based on the radionuclide, radiation type, activity, and process.

Applications
Suitable for specifically assessed procedures involving radioisotopes in research, pharmaceutical, healthcare, nuclear medicine, and other authorized laboratory environments.

Note: Radioisotope fume hood design, installation, testing, filtration, shielding, exhaust discharge, and operating procedures should comply with applicable radiation-safety regulations and requirements of the responsible radiation-safety authority.

CHROMGATE-Product Catalogue-2026

CHROMGATE-Product Catalogue-2026

Auxiliary Air Laboratory Fume Hood
HSN Code: 841490

The Chromgate Auxiliary Air Fume Hood is designed for laboratories where reducing the amount of conditioned room air exhausted through the fume hood is an important consideration.

A controlled quantity of supplementary air is supplied near the hood face from a dedicated external air system. This auxiliary air contributes to the total exhaust requirement, potentially reducing the quantity of conditioned laboratory air drawn into the hood.

Working Principle
The system balances three principal air streams:

Auxiliary / Make-Up Air + Laboratory Room Air → Fume Hood Exhaust Air

Correct airflow balance is critical. Excessive auxiliary air can create turbulence around the hood opening and adversely affect containment.

Key Features:-

• Dedicated auxiliary / make-up air supply
• Reduced dependence on conditioned room air, when properly designed
• Controlled negative-pressure exhaust operation
• Balanced supplementary and room-air intake
• Dedicated supply and exhaust ducting
• Adjustable airflow arrangement
• Optional airflow monitoring and alarm
• Suitable for air-conditioned laboratories
• Pre-filtered / conditioned auxiliary air can be provided according to HVAC requirements
• Customized according to laboratory HVAC and exhaust requirements

Design Consideration
Auxiliary airflow should be carefully engineered and commissioned to avoid positive pressurization, turbulence, or disruption of containment at the hood face. The hood, room HVAC, make-up air, and exhaust system should therefore be considered as an integrated ventilation system.