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The mid-size Bonsai FFU: a 3' wide clean-air zone in a 14" deep housing.
The Bonsai 3' x 2' fan filter unit is the middle of the Bonsai FFU lineup: a 3' wide curtain of HEPA-filtered air for grain transfers, agar and inoculation, in the same slim 14" deep housing as the 2' x 2'.
Every Bonsai fan filter unit pairs a true H14 HEPA filter with a backward-curved aluminum blower, a washable magnetic pre-filter and a 20-gauge powder-coated steel housing. It plugs into a standard 120V outlet and sits on an ordinary table, since the housing is only 14" deep.
The H14 HEPA filter is rated 99.995% at 0.3 micron, the standard for ISO Class 5 (Class 100) clean air, in a microfiber pack held in an aluminum frame.
A 3' wide filter face lets you set plates, jars and bags side by side and work through a full batch in one session.
An aluminum centrifugal blower instead of the plastic fans in many budget units, three speed settings, and a pre-filter you rinse clean so the HEPA lasts longer.
Pour plates and make clean transfers in filtered air.
Inoculate grain jars, spawn bags and substrate.
Work with LC, clone tissue and load syringes.
Expand colonized grain into fresh jars or bags.
Set it on a sturdy table with the filter face toward your work area.
Any grounded 110/120V outlet works. No special wiring.
Turn it on a few minutes before you start so the bench fills with filtered air.
Keep open plates and jars between the filter and your hands. Don't reach over them.
Filter planning. Rinse the magnetic pre-filter regularly and plan on a new HEPA filter about every 24 months for hobby use, or 12 to 18 months in a busy lab. An open agar plate test or a particle meter tells you when it's actually due.
Complete the setupStock your bench with pre-poured agar plates, sterile scalpels and sterilized spawn bags. Prefer a wood-cabinet laminar hood? Compare every option in flow hoods.
For most home growers, yes. It blows HEPA-filtered air across your work area for agar, liquid culture and inoculation, in a slimmer housing than a cabinet-style hood.
A true H14 HEPA filter rated 99.995% at 0.3 micron, which meets ISO Class 5 (Class 100) clean-air levels.
No. It plugs into any standard grounded 110/120V outlet.
About 50 to 60 dBA, similar to a window air conditioner.
Rinse the magnetic pre-filter now and then so it keeps catching larger particles, and replace the HEPA filter when an agar plate test or airflow check says it's due, typically every 12 to 24 months.
Bonsai FFUs have an 18-month limited warranty covering manufacturing defects under normal use. Unopened units can be returned; opened units are exchange only. We'll help with any shipping damage.
Nice performing Unit. I had one I bought on Amazon 3 years ago but cannot find replacement filters. Glad I can buy one here and know its from a company that has been in business for 10+ years.
Fast shipping and was packed well. The unit works well and it ended up being cheaper than building one.
Love this thing! So glad I bought it!
This is my 2nd FFU. The first one I bought from a different vendor for about $300 more. So this is definitely a good place to purchase one! I ordered Tuesday and received mine Friday! Well packed and protected! In case you are confused about the difference between an FFU and a Laminar Flow hood, let me fill you in. They are very similar, but there are a few key differences and theories on how these work in our field of Mycology. 1. No laminar flow. FFU's were originally designed to make a clean room. You would install them in a wall or ceiling and this would constantly push clean air into your room. There is no box for air to build up before it is pushed through the filter, so you get air movement in all directions. Is this bad? Theory 1: NO, Theory 2: Yes. I will explain later. 2. FFU's have Adjustable speed fans: Since these are meant to clean rooms originally, they have 3 speed settings and allow you to adjust the speed of the air. Most flowhoods should be around 110-175 FPM air flow. So these can be adjusted to match the traditional air speed of the normal laminar flow hoods 3. Take up less room: Since there is no box, these have a shallow depth allowing you to place one on a standard table and still have room to work. They are Portable and easy to store when not in use. I want to explain the one disadvantage of an FFU over a traditional Laminar Flowhood. Laminar flow is air movement in a consistent steady stream. When people design flowhoods, there are calculations on how big the box is and how powerful of a blower fan motor to use. When you match the correct two items you get perfect laminar air flow. This is great for doing microbiology work, extensive agar work and delicate tasks that require precision. For most of us we really don't need that level of clean air. FFU's send clean air in multiple directions and for basic work like grain to grain transfers, fast agar transfers, inoculations and other mycologic work the air will be clean and you should not have any issues. These units work best in smaller rooms and always make sure you run it for 30 minutes prior to using. In my experience, large flow hoods are obviously the best tool for the job but some of us can't afford them! I have had no issues using FFu's the same way I would a flowhood for half the price. Now, I just received this Bonsai Model which appears to be a customized version of all the other ones being sold online. It has the same specs and I really like the washable pre-filter. When I received my first FFU, the pre-filter that came with it seemed to restrict the air flow too much and I had to buy a thinner filter. This one is exactly what this units needs. Props to Bonsai for including that. Overall, I think this unit looks and performs just like it should. I have not used it yet but I have it next to my older unit and it sounds and blows like it should! Good luck everyone and enjoy the hobby!
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