Ductless Fume hood

We offer a practical solution for laboratories where harmful fumes are generated during their periodical testing process and the external venting is not feasible. Equipped with scrubbing systems, these hoods effectively capture and neutralize harmful fumes generated during chemical reactions.

Ideal for Limited Space and Small-Scale Chemical Handling

Ductless fume hoods are particularly well-suited for laboratory environments with limited space and where only small quantities of hazardous substances are handled.

How to Order a Ductless Fume Hood:

Assess Your Needs: While ductless fume hoods offer more convenience, it’s essential to consider their limitations compared to traditional vented hoods. Certain chemicals or high-volume operations might require a vented system.
Provide Detailed Information: The ductless fume hood is tailored to your specific needs, it is necessary to provide a comprehensive list of chemicals, expected vapours, reaction conditions, and daily usage to ensure a perfect operation.
Determine Hood Size: The size of the fume hood should accommodate the equipment and materials you’ll be using. Hence, according to those sizes, the size of the fume hood should be planned.
Customization is Key: Ductless fume hoods are typically custom-designed to meet individual requirements. The scrubbing process, filtration method, and operational techniques may vary.
Design and Validation: Based on the information you provide; our team will design the ductless fume hood that meets your specific needs. Once the hood is constructed, we can conduct validation tests to ensure optimal performance and we can provide the validation protocol for the periodical revalidation for regulatory requirements.

By following these steps and working closely with our experts, you can acquire a ductless fume hood that provides a safe and efficient working environment for your laboratory.

Ductless fume hoods are the fume hoods without duct but with the complete scrubbing solution for the expected output from the reaction carried out inside the fume hood. Hence this is a preferred choice to the scientist where the external duct is not possible.

Ductless Fume hood is an ideal for use in laboratory environments where space is limited and only small volumes of harmful substances are handled.

A ductless fume hood protects your personnel and the environment from toxic or volatile chemicals so that you can concentrate on what matters most in your work. Continuous airflow across the work surface draws contamination away from the user, recycling clean air back into your laboratory. Our ductless fume hoods provide energy savings, safety, and convenience.

For package and mail inspection workstations / powder processing : In addition to all the above facilities, HEPA filters can also fitted where particulate or microbial flow is planned. Basic ductless fume hoods are designed to provide high-level performance features at an affordable price. Pure air Basic ductless fume hoods are found in research laboratories, educational facilities, and forensic laboratories throughout the world and are designed to protect the user and the environment from hazardous vapors generated on the work surface. At the heart of the Pure air ductless fume hoods product line is the innovative Filtration Technology that creates a safe work environment over the widest range of applications in the industry.

High efficiency blower
Energy saving LED lighting
Filter
Protects the operator from fume and (with added HEPA / ULPA filter) particle hazards.
A unique filter clamping design eliminates bypass leakage outside the cabinet.
A perfect scrubber with liquid a toxic fume trap.
Steel Support Frame: The chemical resistant epoxy coated steel frame adds mechanical strength
Hinged Front Sash: When closed, the cabinet sash protects the contents from inadvertent external contact and better isolates the air within. The sash is easy to open and close.
Work Surface: The internal work surface can be fitted based on the nature of the chemicals and vapours planned. Granite / Epoxy composite/ Phenolic resin laminate work tops are available.

Ductless Fume Hood: A Step-by-Step Guide

Ductless fume hoods are a popular choice for laboratories and research facilities due to their ability to capture and filter harmful fumes without requiring external venting. Here’s a step-by-step process to use a ductless fume hood:

Preparation:

Personal Protective Equipment (PPE): Always wear appropriate PPE, such as gloves, lab coat, and safety glasses, before working with chemicals.
Clear Work Area: Ensure the work area inside the fume hood is clear of any unnecessary items.

Turn on the Hood:

Locate the power switch and turn it on.
The fan should start running, creating a downward airflow within the hood.

Place Chemicals:

Place the chemicals you intend to use inside the fume hood. Avoid working directly under the airflow, as this can cause fumes to escape.
Keep the chemicals organized and labeled.

Start Experiment:

Begin your experiment or procedure.
Keep the sash lowered: The sash should be lowered to a safe level to capture fumes effectively while allowing you to work comfortably.

Monitor Air Quality:

Regularly check the air quality indicators provided with the ductless fume hood. These indicators can help you assess the effectiveness of the filtration system.
If the indicators show high levels of contaminants, adjust the sash or increase the fan speed.

Clean Up:

After completing your work, carefully clean up any spills or residue.
Dispose of waste materials according to proper safety guidelines.

Turn Off the Hood:

When finished, turn off the fume hood.
Allow the fan to continue running for a short time to ensure that any remaining fumes are filtered.

Advantages of Ductless Fume Hoods:

No External Venting: Ductless hoods eliminate the need for complex ventilation systems, reducing installation costs and simplifying maintenance.
Portability: Many ductless hoods are portable, allowing them to be easily moved to different locations within a laboratory.
Flexibility: They can be used for a variety of applications, including chemical handling, biological research, and pharmaceutical manufacturing.
Energy Efficiency: Ductless hoods typically consume less energy than traditional vented hoods.

Selecting Ductless Fume Hoods for Different Chemicals:

When selecting a ductless fume hood, it’s crucial to consider the specific chemicals you’ll be using. Different chemicals have varying levels of toxicity and volatility, which can affect the required filtration efficiency. Here are some factors to consider:

Chemical Type: Determine the type of chemicals you’ll be working with (e.g., acids, bases, organic solvents).
Toxicity: Assess the toxicity level of the chemicals. Highly toxic substances may require more advanced filtration systems.
Volatility: Consider the volatility of the chemicals. Volatile substances evaporate quickly and may require higher airflow rates.
Filtration Efficiency: Choose a ductless hood with a filtration system that is appropriate for the specific chemicals you’ll be handling. Some hoods may have specialized filters for particular types of contaminants.

Disadvantages of Ductless Fume Hoods:

Limited Airflow: Ductless hoods may have limitations in terms of airflow compared to vented hoods, which can affect their performance for highly volatile or toxic substances.
Filter Maintenance: Filters need to be regularly inspected and replaced to ensure optimal performance. This can add to maintenance costs and time.
Cost: Ductless hoods can be more expensive than traditional vented hoods, especially for larger or specialized models.