Laminar Flow Hood

  • Body Material High Quality Powder Coated Steel or Stainless Steel 304
  • Size: 1200×600, 1000×1000, 1200x750mm, or Customized Size
  • Fan, High Efficiency Filter and Flow Equalizing Plate
  • 15 Days Delivery
  • 24/7 Technical and Sales Support
  • Laminar Flow Hood
  • Laminar Flow Hood
  • Laminar Flow Hood

Your Reliable Partner and Manufacturer of Laminar Flow Hood

Contact us to customize your laminar flow hood now!

Laminar flow hood consists of a HEPA filter and a fan unit. Compared to fan filter unit, it’s more like an upgraded FFU unit. Let’s see laminar flow hood typical features:

Laminar flow hood generates vertical unidirectional airflow, can create ISO4.8 local clean environment. It’s been put above on any single product process point, or many laminar hoods combined to make a continuous strip clean area. It can be installed anywhere, hanging on ceiling, or standing on floor by supporting frame.

Laminar flow hood return air is indoor, while FFU unit return air goes through area between two layers ceilings.

It is easier to change high efficiency filter in laminar flow hood. Meanwhile its equipped flow equalizing plate air flow from which is more uniform, to some extent high efficiency filter is extra protected. The exterior also looks nicer than FFU units.

Laminar flow hood is in wider use than FFU units and can be used in clean room or not clean room, like concrete block which means no requirement on existing building cleanliness. It can save much cost on building clean room. This hood is widely used in precision machinery, electronics, pharmaceuticals, food, and fine chemicals industries etc.

Contact us to customize your laminar flow hood now!
ModelExternal Size(mm)Working Area(mm)Rated Air Flow(m/s)Working Area cleanlinessNoise(dB)Illuminance(Lx)Power(kW)
UFH-120.601200 x 600 x 6001200 x 6000.45±20%ISO 565≥3000.25
UFH-100.1001000 x 1000 x 6001000 x 10000.4
UFH-120.751200 x 750 x 6001200 x 7500.3
PDF Catalog

Laminar Flow Hood: The Complete Guide

Zonsteel laminar flow hood is double-layer negative pressure structure, no leakage risk.

Zonsteel laminar flow hood is liquid seal tank, in high quality, high efficiency, high cleanliness, ensuring area under is asepsis.

Zonsteel laminar flow hood is internal and external consistency, clean and no dead ends.

Zonsteel laminar flow hood has several control modes to meet your different requirements.

Zonsteel laminar flow hood has multiple pressure equalization, uniform wind speed, good unidirectional flow pattern.

Zonsteel laminar flow hood uses EBM fan which has large air volume, small pressure difference change and reliable performance.

Zonsteel laminar flow hood fan external size can reach maximum 2600x2600mm.

Zonsteel laminar flow hood body material SS304, or powder coated steel.

Zonsteel laminar flow hood size could be custom made, or standard 1200×600, 1000×1000, 1200x750mm.

Contact us today to customize your laminar flow hood!

Laminar Flow Hoods: The Ultimate FAQ Guide

Laminar flow hood can save your cost from build a big area clean room, if you need only working area, production line, or some small area sterile. So you can install laminar flow hood for those mentioned area achieve high cleanliness grade.  The use of laminar flow hood is very flexible, and its movable.

From this guide, you will learn laminar flow hood use, material, features, advantage, choosing tips among other things.

This guide will make you an expert and help you improve the sale of laminar flow hood in bulk.

Let’s dive in:


What Is a Laminar Flow Hood?

Mounted laminar flow hood

Figure 1: Mounted laminar flow hood

A laminar flow hood can be defined as a ventilation device in a cleanroom or lab. It has an enclosure where you can perform all the critical experiments without the risk of contamination.

Being a ventilation device, its work to protect the various materials, biological samples, and semiconductor wafers in a lab from contamination.

Depending on the level of protection of the laminar flow hood, they are categorized as class I, II, and III.


How Does the Laminar Flow Hood Work?

Laminar  flow hood

Laminar  flow hood

A laminar flow hood works by making the airflow to be steady and have a uniform velocity.

First, the air is passed through one or several HEPA filters to ensure that the air that reaches the work area in the hood is free of any particles. Once the air is filtered, it is then dispersed to the whole hood or enclosure.

Still as part of the laminar flow hood, there will be a prefilter. Its job is to remove as many particles as possible to keep the HEPA filter from easily clogging.

What you need to keep in mind is that the air is blown at a constant steady velocity. Depending on the type of laminar flow hood, you can generate different types of airflow patterns. This is based on the application of the laminar flow hood.


What Are the Common Types of Laminar Flow Hood?

A laminar flow hood type depends on the airflow direction. It is why Zonsteel now has the two most common types as the vertical laminar flow hood and the horizontal laminar flow hood.

Below are more details about the laminar flow hood types.

Vertical Laminar Flow Hood

Figure 2: How a vertical laminar flow hood works

The figure above to illustrates how the vertical laminar flow hood works.

The room air which is the one with red arrows will enter the laminar flow hood at the top. It is then forced through the HEPA filter by the fan.

The HEPA filter will remove 99.99% of the particles in the air before the air can be released down towards the work surface.

The vertical laminar flow hood is commonly chosen as it resembles the working of a laminar flow cleanroom. This is where the fan filter units are positioned in the ceiling. They then direct the air downwards with the use of vertical laminar flow reinforced by the effect of gravity.

The use of a vertical laminar flow hood can also be necessary when the floor space is limited.

This is because the configuration of the vertical laminar flow hood does not take up too much space and still provides an effective source of clean air for the workspace.

Users will generally like this design as the filter is placed at the top. This means that the access for maintenance is easier and faster.

Horizontal Laminar Flow Hood

Figure 3: How a horizontal laminar flow hood works

The horizontal laminar flow hood will have the room air enter from behind the HEPA filter compared to above when using the other configuration.

As usual, the HEPA filter will remove 99.99% of the air particles as the air is forced across the filter in a back-to-front direction.

Since the laminar airflow in this configuration is parallel to the work surface, it will help eliminate the turbulent effects experienced from the vertical laminar flow hood.

An important thing to note is that the horizontal laminar flow hood will require more space to set up. This is because the fan unit and its filter are rear mounted. Also, you will end up with a deeper bench to accommodate the orientation of these components.

Users also find that the horizontal laminar flow hood would be easier to position and cover a wide area. You would be able to keep the workspace sterilized in a shorter time than when using the vertical laminar flow hood.

Whichever configuration you decide to get, it is important that you always consider your needs.

This is where Zonsteel comes in. The guide will be able to help you choose the best laminar flow hood depending on your needs.

This guide will also teach you on how best to operate the laminar flow hood so that it can maintain the clean room integrity and last for years to come.


What Are the Applications of Laminar Flow Hoods?

A section of mounted laminar flow hood

Figure 4: A section of mounted laminar flow hood

A laminar flow hood can have several applications as stated below;

  1. The laminar flow hood will be common in cleanrooms and labs where there is the need to maintain the workspace integrity.
  2. The laminar flow hood is also great for various industries such as the medical institutions. This is where you have to maintain extremely clean environments to conduct several procedures.
  3. If there are scientists working with biohazard materials, the laminar flow hood is essential for drawing the contaminated air from the room. This is to keep the scientists safe too.
  4. The laminar flow hood can be great in healthcare institutions where there is need for preparing sterilized solutions.

So long as there is the need for continuous clean airflow in an area, then the laminar flow hood can come in handy. There is no doubt you would feel comfortable getting one today to keep your work area safe and help you breath better.


What Are the Benefits of Using Laminar Flow Hoods?

A cleanroom personnel using a laminar flow hood

Figure 5: A cleanroom personnel using a laminar flow hood

There is no doubt sometimes you need more convincing to buy a laminar flow hood. Below are some of the benefits you will experience by setting up a laminar flow hood in your area of work.

Good for Creating a Sterile Environment

Once you set up the laminar flow hood, it will help in filtering the polluted air and then maintain the sterile environment.

This is an important feature especially for those who work in labs. The last thing you want is the for the contaminants to affect the results of a research.

Failed experiments will make your research useless when you could have simply installed a laminar flow hood to make them more successful.

Still, the researchers can be harmed when the germs are not eliminated from their workspace. Luckily, the use of a laminar flow hood can go a long way to keep the environment safe.

Cost-effective Method

One thing that stands out for using a laminar flow hood is that it can be a cost-effective method for maintaining the cleanliness in your workspace.

These hoods do not cost much compared to some other methods.

As much as they are affordable, they are still able to maintain the cleanliness standards that you might need for your workspace.

It is not just about the initial cost, but also the maintenance costs. These costs are still low so that you can keep the laminar flow hood running efficiently.

Most of the maintenance money will go towards replacing filters and servicing the fan. Other than that, you do not have to worry much about the laminar flow hood expenses.

Easily Portable

Zonsteel makes several types of laminar flow hoods. It comes down to what you need for the application.

It is possible to get a portable laminar flow hood.

As such, you would easily move the laminar flow hood from one room to another then plug it in to provide clean air in that room.

When the other systems might have been hard to get the best portability, this one stands out. It does not have too many cables that might hinder its portability.

Ease of Use

Many people find the laminar flow hood to be easy to use. This is because the control panels do not have many options.

Even if you are new to using a laminar flow hood, you will find it easier to operate.

Most manufacturers will also have a clear set of instructions on the best use of the laminar flow. This is to ensure that you always get it done right.

Good for Integrity Checks

A laminar flow hood is a great spot for installing air quality monitoring systems.

Since air goes through the laminar flow hood, it is also a great place to monitor its quality. The results of the monitoring system will help you know if it is time to change the filters or not.

As such, you will end up with a clean workspace having the best air quality while at the same time a laminar flow hood working effectively.


What Are The Common Components in a Laminar Flow Hood?

A complete Zonsteel laminar flow hood

Figure 6: A complete Zonsteel laminar flow hood

A laminar flow hood is essential for providing you with a particle-free work area. To make this happen, there are several components that must work together.

Below are the most likely components to get in a laminar flow hood.


In some cases, it is referred to as Sash. This is the face of your hood and it will be a transparent panel.

Its work is to shield the internal samples you are working on from contamination from the outside environment.

In order to reach the samples in the laminar flow hood, the shield needs to be raised. Once the operation is complete, it is closed for UV sterilization to commence.

Since keeping it open will introduce some contaminants into the laminar flow hood, it is best to keep it shut while not in use.


The airfoil is an important vent found on the laminar flow hood.

The work of this vent is to allow the room air to enter the chamber and prevent vapors from escaping.

Such an opening would be at the bottom front of the laminar flow hood.

The opening is also important to prevent the formation of turbulent eddies in the workspace. The last thing you want is to have air imbalances in your workspace.


The baffle is an adjustable partition that influences the air velocity, force, and its direction.

In most cases, the baffle would be under the ceiling just above the work area.

To make it effective, most laminar flow hoods would have the fan filter unit containing the baffles too. You will now end up with better air uniformity getting into the work area.

Fan/Filter Unit

The fan filter unit of FFU is an important part of your laminar flow hood.

Its work is to create the right number of air changes in the hood and filtering out of the particles, fumes, and vapors.

These units would have the HEPA and ULPA filters depending on the type of laminar flow hood and their applications.

These filters are also supported by the pre-filters for collecting most of the particles.

No one wants to change their HEPA filter more often.


You somehow need to know the level of operation of your laminar flow hood. That is why you need the meters and gauges.

Depending on a model, you can get some having one or several gauges on the hood. From the gauges, you would know how to adjust the laminar flow hood operation to suite your needs.

Also, you can monitor that particle count and air velocity to ensure that you end up with the correct air flow in your laminar flow hood.

Work Area

This is the work space in the enclosure of a laminar flow hood.

Depending on the laminar flow hood configuration, the work area can be at the center for vertical laminar flow hood or in front of the fume filter for a horizontal laminar flow hood.

This area is also the ideal place to store and perform your experiments. This is because it would be the cleanest part of the hood.

There will be other components depending on the design of the laminar flow hood. Just make sure it is the one you need for your application.


How Can You Effectively Use Laminar Flow Hoods?

The assembly of a laminar flow hood

Figure 7: The assembly of a laminar flow hood

When you are new to using a laminar flow hood, you might end up doing some mistakes that might jeopardize the integrity of the enclosure.

Below are the Do’s and Don’ts of using a laminar flow hood so that you can end up with the best working area.

Let us check them out below.


✧   You should not take the laminar flow hood as a storage area. As such, there is the need to minimize clutter as much as possible. Having too much clutter in the hood will make it hard to effectively clean it.

✧   The personnel that uses the laminar flow hood needs to wash their hands and arms before putting them into the hood. Since you need to maintain the sterile environment, then there is the need for proper cleaning of your hands before getting into the laminar flow hood.

✧   There is the need to properly arrange the objects in a way that provides for full laminar flow of the air in the enclosure. In most cases, you should place them directly under the filter or in front of the filter. This will be the cleanest area of the hood.

✧   You should not spray solutions to the HEPA filter. This is because it can lead to contamination of the air downstream.

✧   Try to keep the large objects from being too close to the back of the laminar flow hood. This is because the large objects tend to contaminate the air reaching the other items downstream. With the proper arrangement, you can get cleaner air reaching all the objects better.

✧   You should always disinfect the various materials before entering the laminar flow hood. This is to further reduce the chances of contaminating the other surfaces in the laminar flow hood.


✧   Putting wastes and other unrelated items in the hood. Once something is no longer needed in the laminar flow hood, then take it out. There is no need for it to remain in the hood and possibly contaminating the other samples.

✧   Wearing jewelry around your wrists and hands. In most cases, jewelry will be non-sterile items. As such, they are likely to introduce more bacteria and other particles in the work area.

✧   Using materials that are yet to be disinfected. Each time you do so, the chances are you make it harder to get the best results for an experiment or research. So, disinfect everything before putting them in the laminar flow hood.

When you buy a laminar flow hood from Zonsteel, you will the additional instructions on how to effectively use it.

The aim is to get you enjoying the laminar flow hood and keep your research a success.


How Can You Effectively Clean a Laminar Flow Hood?

Figure 8: Wiping of a laminar flow hood

When it comes to cleaning your laminar flow hood, it might sound as a straightforward process. However, there is the need to take your time to know the dos and don’ts of cleaning your laminar flow hood.

The first thing to keep in mind would be to sanitize, sterilize, or disinfect. These three are commonly interchanged when cleaning your laminar flow hood. It is then important to understand where each apply.

Sanitize: This is a stand cleaning procedure which involves the removal of visible contaminants and dirt. It will help in reducing the germs of a surface thus diminishing the chances of contamination, infection, and illness.

Disinfect: For those who want to eliminate viruses, bacteria, and fungi, there is the need for using a cleaning agent. In this case it is a disinfectant. Disinfecting provides median cleanliness between sterilization and sanitization.

Sterilize: To ensure that the laminar flow hood is free from microorganisms, then you need to sterilize. This process involves the use of heat, pressure, and chemicals. If something is sterilized, then it does not have contaminants on its surface.

Preparing Your Supplies and Equipment

You need to prepare yourself to clean the laminar flow hood correctly. Here are some tips to keep in mind.

✧   You should wear the safety glasses, cleanroom gloves, and other important cleaning clothing to avoid chemicals from touching your skin.

✧   There should be a chemical-safe garbage bag in the room so that you can dispose your cleaned trash safely.

✧   Do not use the paper towels as they will leave behind particles. Use the ISO friendly cloths or cleanroom wipes to end up with a better environment.

✧   The cleanroom swabs should be used for cleaning in tight corners and edges for proper dirt removal in the laminar flow hood.

✧   Use the cleanroom vacuum to remove the loose dirt and powder from the surfaces. Rubbing this type of dirt using wipes can easily scratch the surface. That is not something you want.

Tips for Cleaning Laminar Flow Hood

Figure 9: Personnel cleaning a laminar flow hood

This section considers both the horizontal and vertical laminar flow hoods.

Here are some of the general tips that you should keep in mind when cleaning the laminar flow hood.

✧   Start by removing the different things that might be in the laminar flow hood. This is to ensure you have enough room to clean the whole enclosure.

✧   Turn on the laminar flow hood for 30 minutes to help in removing as many air particles as possible.

✧   Turn off the laminar flow hood before cleaning can commence

✧   Apply enough amount of the cleaning agent to the pad and start cleaning the enclosure with the wet cloth or pad. As much as it is supposed to be wet, it should not be dripping.

✧   Clean the enclosure touching each of the panels and reaching the tight corners as much as possible.

✧   If the cloth or pad seems to have too many contaminants, switch to another one or fold it to expose a fresh side.

✧   Take care when cleaning the area with the HEPA filter. You do not want the cleaning agent to meet the HEPA filter. This can affect the filtering capability of the HEPA filter.

✧   You now need to repeat this whole process but this time using a sterilizing agent. This is to ensure that all the contaminants are removed from the surfaces.

Once you have cleaned the laminar flow hood to your satisfaction, the device is ready for use once again.

You should consider doing more sterilizing processes between different operations in a day. This is to ensure that you always have a sterilized work area before starting a new experiment.

Also, clean any spills immediately. This is to keep the dirt from affecting the results of your experiments in the laminar flow hood.


Why Should a Person Choose the Laminar Flow Hood from Zonsteel?

Fully assembled Zonsteel laminar flow hoods

Figure 10: Fully assembled Zonsteel laminar flow hoods

At this point, you might be interested in getting yourself the best laminar flow hood. But why should you get one from Zonsteel?

Here are some of the reasons to get you started.

✧   Zonsteel has over two decades of experience in making laminar flow hoods. This experience is important in making sure you get a high-quality and functional laminar flow hood.

✧   The design and construction of the Zonsteel laminar flow hood ensures there are no leakages. This is top the enclosure of the laminar flow hood maintain its integrity.

✧   Zonsteel also uses high quality materials to make the laminar flow hood. This includes the use of stainless steel 304 material and powder coated steel.

✧   15 days delivery from Zonsteel should be a great turnaround time for anyone who needs a laminar flow hood fast.

✧   There is also a dedicated technical and sales support team available to handle all your queries about laminar flow hood and other related products from Zonsteel.

✧   Zonsteel makes different types of laminar flow hoods and sizes. There are standard sizes and there are custom sizes. If you want a custom size, talk to us today to create something that works for you.

✧   The Zonsteel laminar flow hood would have several control modes. The aim is to make it possible to tailor the hood to suit your needs for getting one in the first place.



So, if you want to invest in a laminar flow hood, let the experts help you.

Zonsteel is ready to help you get the right laminar flow hood to ensure that you get to handle all your needs effectively.

Quick Response
Update cookies preferences
Scroll to Top