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Product Descriptions
Flanders offers a comprehensive catalog
of air filtration products and related
equipment and hardware divided into product lines by end-user. Each product line is
marketed separately through a combination of direct sales and a network of regional
distributors and specialized technical representatives and contractors. If you would like
to purchase some of our
products, drop us a line (We don't have online ordering set up yet, but we'll get back to
you immediately if you tell us you want to order something :-).
HEPA Filters
The Absolute, or HEPA, filter is used to remove extremely tiny particles from air
or other gases. Many of the Company's product lines revolve around the basic technology of
the HEPA filter. A HEPA filter must have a minimum efficiency of 99.97% in capturing
particles as small as 0.1 microns (a micron is one-millionth of a meter). These filters
are so efficient in removing small particles that they will capture the tiny particles
contained in cigarette smoke. The term "HEPA filter" stands for "High Efficiency
Particulate Air filter."
HEPA filters are made of a fiberglass "paper" which is then pleated to maximize
the surface area of the filter. The Company is the only filter manufacturer that produces
its own high efficiency paper media. The Company has developed unique processes which
enable them to manufacture "completely separatorless" filter elements. All competing
filters use aluminum, tape, glue, strips or strings to separate adjacent pleats of the
media. These separating materials obstruct air flow and contribute to particle generation
and off-gassing. The high quality and consistency of the Company's media enables them to
construct pleats of completely self-separating media.
HEPA and ULPA ("Ultra Low Penetration Air") filters remove particles from the air stream
using three of the four basic particle removal mechanisms: Brownian diffusion, direct
interception and inertial impaction (the fourth mechanism, known as sieving or straining
is not a primary method for HEPA filters, since it is primarily effective for particles
larger than 2 microns, which are assumed to have been removed by pre-filters).
Laminar Flow Grade
- HEPA Filters and Equipment for Cleanroom
Applications
Filters and equipment for cleanroom applications currently account for
approximately 50%
of our sales. We sell laminar flow grade HEPA filters and equipment to
cleanroom contractors, as well as directly to end users, through its network of
representatives. Flanders' laminar flow grade filters
are marketed under the trademark AIRVELOPE .
Air filtration is the key to current
cleanroom technology. Cleanroom cleanliness is measured by determining the number of
particles of a given size per cubic foot of air, called the "Class" of the room; e.g., a
typical office environment might be rated Class 500,000, if the air contains 500,000 or
fewer microscopic particles per cubic foot; a modern semiconductor manufacturing facility
will be rated Class 1, having at most one particle in any cubic foot of air. Cleanroom
performance is, in part, determined by the number of filters in the room, and the grade of
filter.
Another major facet of cleanroom performance is the amount of laminarity for air
flow in the room. If the air flows in straight, parallel paths throughout the cleanroom,
the airflow is said to be laminar. Laminar airflow guarantees that air is replaced
frequently in the room, and that particles generated by the manufacturing processes in the
room do not become trapped in "vortices" where they may accumulate and cause
contamination. The construction of the room, especially the ceiling and floor systems, is
the most obvious factor affecting laminarity, but equally as important are two factors in
the filter's construction. Uniform resistance of the filter media, and a large number of
properly shaped parallel pleats. These factors are essential to laminarity, and thus a
cleanroom's overall performance.
Historically, greater than 40% of our revenues
have come from sales of laminar-grade products for end use in semiconductor manufacturing
facilities. Sales of Flanders products to this market generally occur in conjunction
with the construction or expansion of a semiconductor fabrication facility.
HEPA, ULPA, VLSI and VLSI II Laminar Flow Grade Filters The
Company manufactures laminar flow grade filters using state-of-the-art separatorless
designs, with the highest quality media available. These filters are used in cleanrooms
for semiconductor manufacturing, biotechnology facilities, pharmaceutical manufacturing,
research and development facilities, and other areas where an ultra-clean environment is
necessary to maintain profitable yields.
Medium |
Efficiency |
HEPA |
99.99% on 0.3 micron |
ULPA |
99.999% on 0.3 micron |
VLSI |
99.9995% on 0.12 micron |
VLSI II |
99.99999% on 0.12 micron |
Table 2. Performance of filters by grade of media.
Laminar flow grade filters are scan-tested, and efficiencies measured on a generalized
"most penetrating particle size" using parameters typical of spaces where each type of
filter is used (most penetrating particle size is affected by many factors, including
particle density, air velocity, thickness of media, and size and distribution of
fibers).
Channel-Ceil® System.
Flanders invented the CHANNEL-CEIL® Ceiling System in
1969 as a solution to the problem of bypass leakage around filters in vertical laminar
flow cleanrooms. The Channel-Ceil ® Ceiling System is a stick built lay-in ceiling system
designed to be part of Flanders' fluid seal system. Since it was introduced, it has been
installed in over four million square feet of cleanrooms worldwide, and is recognized
today as a state-of-the-art product available for the construction of HEPA filter ceilings
in Class 100 to Class 10,000 environments.
Other Laminar Flow Grade Products
We manufacture a full line of auxiliary products, including AIRVELOPE
laminar flow modules with built-in fans, isolation environments, self-contained
portable cleanrooms, CHANNEL-HOOD ducted supply filter housings, and TH-SERIES
TERMINAL FILTER MODULES for ducted air supply or mixed-flow cleanroom applications.
Industrial Grade
- Filters and Equipment for Conventional HVAC
Systems
Flanders industrial grade filters are used in many applications, including hospital
and bio-medical ventilation systems, photoproduct processes, food handling or processing
operations, toxic or carcinogenic containment, and as high-efficiency prefilters for the
terminal filter units in cleanrooms using localized laminar flow hoods above workstations.
Our industrial grade products include PUREFORM ® Separatorless Filters,
Separator-Type filters with corrugated aluminum separators, high-temperature hepa filters,
and 95% DOP high-efficiency filters, in a variety of styles, including nipple-connected,
square gasketed and gel-seal, and round, with or without faceguards. We also
have
a line of C-Series Side-Load Housings for non-hazardous particulate and gas filtration,
A-4 filter holding frames for fluid seal filters, and B-1 holding frames for gasket seal
filters.
Nuclear Containment Grade
- HEPA Filters and Equipment for Nuclear
Containment HVAC Systems
Flanders Nuclear Grade Filters are produced in rectangular, round and
nipple-connected designs. They are widely used in nuclear research, radioactive waste
treatment, nuclear weapons facilities, fuel process plants and storage terminals,
commercial reactors and Department of Energy test reactors. Nuclear grade filters are the
key component to a nuclear facility's radiation containment systems.
We have adapted and added to its nuclear-grade products line to serve needs of
other industries which require the removal of hazardous contaminants from their air
supply. Flanders containment products are used in pharmaceutical research facilities,
deadly-disease wards at hospitals and mobile facilities, animal disease laboratories,
toxic gas processes for semiconductor manufacturing, and hazardous waste treatment
facilities.
Flanders nuclear grade products include rectangular, round and nipple-connected Type
B HEPA filters, V-Bed Carbon Absorbers, Bag-in/Bag-out filter systems for safe removal of
contaminated filters, NBC series side-load filter housings, containment dampers, G-1
filter housings for bag-in/bag-out applications and self-contained filtration systems for
air filtration and tuberculosis isolation. The Company also sells in-place DOP test
equipment, and its Precision Scan system for in-place testing of installed filters.
ASHRAE Grade
- Commercial Grade and ASHRAE-Rated Filters
We manufacture ASHRAE-Rated filters for commercial HVAC systems. These filters
are primarily sold through its Airpure Products subsidiary as replacement and commodity
filters. Because the potential market for these products is extremely large, they are
becoming an increasingly important part of our business.
Flanders ASHRAE Grade products include ECONOCELL PUREFORM®, HIGH-TEMPERATURE
ECONOCELL®, Airpure media panels, Airpure Pak synthetic and glass micro-fiber rigid
extended surface filters, and ECONOCELL ® II UL labeled filters rated in various
efficiencies between 60% and 95%, as well as PF-1 PUREFRAME holding frames for
PURESEAL housings and PURESEAL® HVAC side-load housings.
Chemical Grade
- Corrosion, Odor and Toxic Gas Control
We provide a complete line of products and services to control odors, corrosive
gases and airborne hazardous chemicals. A wide variety of industrial and commercial
applications use this technology, ranging from toxic exhaust handling systems for the
semiconductor industry to removing industrial volatile organic compounds (VOCs).
Flanders chemical grade products include TECHSORB chemical absorbents, GAS-
PAK GRANULAR ACTIVATED SUBSTRATE absorbers and ULTRASORB deep bed absorber systems. Each
product line is available with any of several compounds, depending on the contaminants to
be controlled.
Barrier Isolators
- Controlled Environments for Critical Processes
We also manufacture INFINITY Isolators - stand-alone remote access workstations
designed for parenteral drugs or any material requiring ultra-clean processing in an
enclosure designed to safely work with ultra-pure gasses, biological contaminants, or
vacuums.
Trademarks, Patents and Licenses
Flanders currently sells some of its products under the registered trademarks
AIRVELOPE, CHANNEL-CEIL®, CHANNEL-HOOD, PUREFORM®, ECONOCELL®,
PURESEAL®, TECH-SORB,
GAS-PAK and ULTRASORB.
Flanders holds 8 current patents relating to filtration technology, including patents
relating to HEPA filters and fabrication methods, filter leak testing methods, and laminar
flow cleanrooms. We have a patent pending on its isolation workstation technology.
Flanders currently licenses its products for manufacturing to specialty HVAC and ASHRAE
original equipment manufacturers ("OEMs"), who produce products under their own name, and
with their own identifying labels. Our Airpure subsidiary also manufacturers ASHRAE
filters for OEMs with need for additional capacity, under the appropriate labels.
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