powder containment hoodWe’re going to be focusing on our Powder Containment Hood for the purposes of powder containment or sterile and nonsterile compounding.

Our first and most important promise to you is good containment and sterile and nonsterile compounding. We work with ergonomics and process and your facilities, and your safety team to make sure that the containment levels is achieved within your laboratory setting that you need it.

Powder Containment Hood

The hybrid isolator, or powder containment hood, is a product that we’ve had for many years, and this is a  new version of the hoods. We’re showing here it has continuous improvement from our other products or other bulk powder enclosures.

We have increased circulation due to the engineering of the airfoils. The hybrid part, what we call the dual purpose of the isolator, is the draft shield. Which is also a glove panel and can be removed, you can see if you continue on this page.

Safety First

powder containment hood safety When using the powder containment hood, it is recommended using personal protective equipment, such as safety glasses, lab coats, gloves, and which you could check with your safety officer for appropriate processes & protocols. The bulk powder enclosure is a particular series of isolators that are meant for drum sized quantities, pale quantities, large bags in or bag out, in most cases, something greater than kilogram quantities of material.

Bulk Powder Enclosure

The bulk powder enclosure product has been a standard product for years. So, what we’ve done combined the technology of the bulk powder enclosure, which again is a dual-purpose product, which allows OEB-3 down to OEB-5 containment, allowing the vented enclosure engineering to work without the glove panel and also with the glove panel on. We change the speed with our dual speed fans. There are sensors in the glove panel to allow the fan to understand that and the continuous low-velocity containment that we provide is at about 0.3 to 0.5 meters per second or about 75 feet per minute.

Ductless Fume Hood

We’ve had an evolution of our standard products, the ductless fume hood, which has been out for many years. We are successfully containing with our powder containment hood and open-faced hood, and now we’ve combined these into a new product called the bulk powder containment hood.

Both powder containment hoods have HEPA filtration. We have four HEPA’s, which will show a little bit later. The bag in/bag out technology integrated into powder containment hood with a face velocity alarm. The phase velocity alarm is centered down into the glove panel, continuing to give low flow of about .03-.05 meters per second or about 75 feet per minute.

The powder containment hood a standard product about 60 inches wide or a little over 15 hundred millimeters wide. It has glass viewing panels, polypropylene framing, and LED lighting.

Ductless Fume Extractor with Glove Panel

Unique to Flow Sciences, this technology allows for simple removal of the glove panel to transition to an open face bulk powder enclosure. Easily remove the quick release pins from the left and right support panels. Leave the glove panel off the powder containment hood and store it. You now have an open-faced ductless fume hood. When you have an application with higher toxicity, placed the glove panel back on the system. Push the quick-release pins in to secure.

That was the removal of the draft shield and gloves panel. Part of the construction of the glove panel is 10 inch or 8-inch ports, depending on the type of powder containment hood. The fans are moving a little quicker now because the hood has detected the removal of the gloves panel. Essentially what’s happening, we’re still in green “go” mode on our digital face alarm. We should mention that we have a mini gauge our big in/bag out dual HEPA fan filters.

bulk powder enclosure airflow

Sterile and Nonsterile Compounding

The way the air works, the air is going to come from behind the operator, through clims, up through a removable ceiling with the clims. The ceiling is removable and tools for cleaning purposes.

The room air is drawn through the face opening like a vacuum and keeps the toxic material from escaping the ductless fume hood. The contaminated air is then drawn through the patented baffle system and into the dual four-inch pleated HEPA filters that are 99.95% efficient for sterile and nonsterile compounding. The fan then pulls the clean air through and pushes it out of the top of the fume hood where it can be recirculated or connected to house exhaust.

Powder Containment Hood Face Protection

bulk powder enclosureThe unit can be cleaned from face to filter, ensuring the prevention of cross-contamination with good lab practices. This is not possible in all ductless fume hoods systems as some areas cannot be accessed to clean between samples causing cross-contamination and degradation of sample integrity.

Basically, what we’re having is a laminar airflow go back, go behind the rear plams. So, all the turbulence is quiet behind the rear plams. It moves above the ceilings and then through four HEPA filters, and the HEPA filters, of course, always protect the fan. So there is no chance of contamination within the laboratory.

Bulk Powder Enclosure Sterile and Nonsterile Compounding

So what we end up doing for many clients is we do a factory acceptance test, or certain powder test for your weigh-in and dispense operations. So, for example, for a bulk powder enclosure, you might be moving upwards of kilograms, and we have factory acceptance test reports where we have operators working with the task duration required. For example, three operators moving three kg of material, and that material might be lactose or, it might be naproxen sodium. Still, the idea is that the amount of material during your weight dispense operation always is measured. We can show containment inside the ductless fume extractor, with the process for your protocol and factory acceptance test. One of the important things is we have a variety of global distributors and third party containment verification companies that we work with sterile and nonsterile compounding. All of these manuals come along with the product, the operations manual, the factory acceptance test, site acceptance tests, commissioning turnover over packages, even custom cleaning protocols are available.

Ductless Fume Extractor API

So when the operator comes with inside the powder containment hood, they’re doing an operation. They may be taking a sample.

Coming across, possibly doing some way, dispensing, and they want to go. Team potentially an API out and then possibly some way of dispensing or blending operations.

Powder Containment Hood Bag In/Bag Out

After they’re done with their weighing dispensing operations, they’re going to move waste disposables into a double safe waste system. And again, there’s protocols and operations on how to take sterile and nonsterile compounding.

We have a painted steel drum, we have it painted steel table, but all of these are available in stainless steel in a variety of different options. You just have to, again, contact your Labs USA and we’ll show you our different arrays.

Powder Containment Hood Drum System

powder containment hood drum systemIn the video, you see how the powder containment hood drum system works and taking the material out of the drum. Dependent upon the safety review, the protocol review of the operation within our client companies. Typically, what will happen is that the drums have two liners on the inside of the drum. But again, there are so many different configurations and so many various operations.

Through our design process, we would do different PDF drawings, 3-D rendering, and a lot of different configurations. The most important thing is that we have great technical staff and they’ll be able to take you through a variety of questions

bulk powder enclosure cleaningBulk Powder Enclosure Easy Cleaning

One of the things that come up is cleaning, because what we want to clean between operations along with several companies customize cleaning procedures for you. The glass panels, the polypropylene framing, are very chemically resistant. The dish phenolic resin surface very chemically resistant. We understand what your process and your protocols.

Powder Containment Hood Fan Filters

Powder containment hood is the bag in and bag out operation within the fan filter units. What is bag in and bag out? We have two filters, the primary filter, and we have a secondary filter that sits right on top of that, always protecting the fan. During the change of procedure you can keep the unit running. An appropriate certifier is going to take out the filter and remove it as toxic waste.

The continuous liner can be attached. We have this labeled as a universal sideboard. Depending on your operation, the whole can go on either side the way you can go on either side. It’s all universal, left or right or right to left. You could put on the continuous liner if you needed. If you need to have operations go through the bottom, we will attach these to the bottom of the bulk powder enclosure. There’s a variety of rubber rings that can go around the unit and.

Powder Containment Hood Fan Filters


Where do the analysts place the drum lid while in the powder containment hood?

The drum lid, which is the black cutout, although, it depends on the protocol for what people are doing. They can use either bag this out, and there’s a variety of flexible operations or flexible single-use bags for that. But typically, it’s put out of the way, so it doesn’t block the airflow. If there’s more information that you need on those particular applications, we’d be happy to have a conversation.

What is the Mesh Top Fan?

This is what we call a mesh pipe fan, and that’s used for recirculation of air or if there are height requirements in the laboratory. We also have fan filter units that can actually be divorced from the unit. But again, it depends on the lab layouts and other processing protocol.

What is the total height of the unit, the height of the work surface?

Featured on this page is a little over eight feet from the floor to the top of the duct. But we can accommodate. It’s 56 inches from the bench to the wall to the top of the duck. But we are going to be able to send you a variety of drawings that show you a customized fit depending on the height of the room you’re in, how the system would fit inside your lab layout. It’s essential, the placement is critical. Mainly the airflow is vital because we want to be able to provide you the required containment. When the placement of the product is in with your facility is very important.

Have you had reports of issues with stability of the weight measures of the scale inside powder containment hood?

It’s a great question, something we get asked all the time, and the answer is no. One of the things that we have in a negative pressure environment is everything pulling itself together. Right. Essentially the vibration dissipated, and for most people that are using milligram or five placed balances, typically they don’t have a problem. But we haven’t had any reports and we do have studies. And we’ve shown six plays, stability, again, depending on how much material your weighting

Can the pass-through can be put on either side?

Yes, this is can be put on the other side and it’s all universal.

How does the face velocity sensor work on the powder containment hood? Do you use differential pressure at the opening of the hood?

So yes, we use a sensor do it’s pressure and temperature then withinside excuse me, inside the face velocity alarm. We have some proprietary software in there, but essentially if it’s you know, it’s the third mister, it’s a hot wire. Anemometer is going to be able to control that. Excuse me. There’s a variable speed control on the fan module. So when your certification or mechanical engineering companies come in, they’re going to take a calibrated anemometer, take measurements at the face and balance the flow of air with the fan within your particular laboratory setting. The other question can be answered because what we’re taking is a differential pressure with the mini hillock. And we report and you just water column and Pascal.

Do we need a special environment outside of the hood?

That is totally up to you, you don’t want the dirtiest and dusty possible area, but we do have companies using these in warehouses. It’s idea is to have a corner or a controlled area where there’s not too much for the hood to compete with. But, we can overcome a lot of airflow currents and even people walking back and forth with the way the size of the fan and the size of the filter works. For the most part, people use these anywhere.

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