Is taking in of another substance by the volume not surface.


Is to take up and hold on the surface of a solid or liquid.

Activated Carbon Filter

Is a porous material made from many possible items like peat, coal, nutshells, and lignite. The “activation” process makes this material capable of adsorption or chemical reactions and turns it into a type of carbon.

Activated Carbon

Is a highly absorbent powdered carbon that purifies by absorption. It is made by burning carbon-based materials at very high temperatures to create a porous internal structure that provides a huge surface area that is ideal for removing odorous compounds and gases.

Advanced Oxidation Process (APO)

Is a method used which involves oxidation with four reagents, air and often ultraviolet irradiation to clean waste water of organic and inorganic contaminates. This process is very exact and uses preprogrammed combinations, dosages, and sequences. Reagents which are used are oxygen, ozone, and hydrogen peroxide.


Are a suspension of solid or liquid particles in air; typical aerosols:
(a) Dusts: dusts are solid aerosols generated from the reduction of larger materials; airborne dust range, 0.1 – 30μ.
(b) Fumes: are solid aerosols formed by the condensation of solid materials, e.g., welding fumes, range, 0.001 – 1.0μ.
(c) Smoke: aerosol mixture formed from incomplete combustion of organic matter, size range, 0.01 – 1.0.
(d) Vapors: are gases formed by the evaporation of materials which are normally liquid or solid, size 0.005μ.
(e) Gas: materials with the tendency to expand indefinitely and which completely and uniformly fills the container it occupies. Air purifier: a device to capture and contain industrial process air contaminants.

Air Changes per Hour

Measures the amount of times an air purifier cleans and re-circulates all of the air in a given room during one hour. The more changes per hour, the more effective the unit is.

Air Filtration

Is cleaning of the air using a variety of particle capturing in filters.

Air Purification

Uses filtration/UV light to clean the air of unwanted microorganisms, odors, fungus, mold, and other impurities that cause disease, allergies, and illness.


Refers to particles that float in the air. Air filters are used to catch these particles and clean the air.

Ambient Atmosphere

The air we breathe which generally consists approximately 78% nitrogen, 21% Oxygen, and about 1% of rare gases such as carbon dioxide, methane, hydrogen, argon, and helium. Factories, automobiles and other pollutants contribute to changes in our ambient atmosphere.

Air Filter

Is a device composed of fibrous materials that captures airborne particles while allowing air to pass through.

Air Purifier

Is a device that removes contaminants such as viruses, microscopic organisms, pet dander, dust and allergens from the air. Air purifiers are especially beneficial to people who suffer from allergies and asthmatics. They also help to reduce and eliminate odors from pets, tobacco smoke and gases.


Is a substance that causes an allergic reaction in a person's immune system. Although the list is long, the most common allergens are pet dander, smoke and pollen.


Is the medical specialty that deals with male health, particularly relating to the problems of the male reproductive system and urological problems that are unique to men.

Approved Aerosol

Are solid particles, fine liquids, microscopic and submicroscopic particles or droplets suspended in a gas or air.

American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE)

Is a society that is based in Atlanta Georgia that has approximately 50,000 members internationally. They are subdivided into student branches, regions and chapters.. These members gather twice a year and exchange ideas on new technology.


Are microscopic, single-celled organisms that have no easily identifiable nucleus and inhabit virtually all environments. Most types of bacteria are harmless to humans and may even be beneficial.


Is a highly flammable organic chemical compound, it is known to cause cancer and therefore it is used sparingly as an additive in gasoline. Its uses in other industries include, but not limited to, plastics, dyes, drugs, and synthetic rubber.


Is an aggregate of microorganisms in which cells adhere to each other on a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance.


Describes biological waste that is often contaminated in some way.

Blue Visible Light

Is the light you see from the air purification units.

Clean Air Delivery Rate (CADR)

Indicates the total volume of air that a specific air purifier cleans of a particular pollutant in one minute. CADR delivers test results for thee main pollutants: tobacco smoke, pollen and dust. The higher the CADR, the faster the air purifier filters the air.


Is a Chemically Active Compound.

Carcinogenic Agents

Are cancer causing substances.


Is an adjective that describes the ability of an agent or process to induce disruption or breakages to genetic material.


Is an environment that has a low level of environmental pollutants. They are 10,000 times cleaner than a hospital operating room and are often used for scientific research and manufacturing. Air entering a cleanroom form outside is filtered to exclude dust and the air inside is constantly re-circulated though HEPA filters at about 10 times per minute to remove internally generated contaminants.

Cubic Feet per Minute (CFM)

Measures how much air passes through a stationary point in one minute. A higher CFM means that the air passes through the air purifier at a higher rate.

Dwell Time

A period of time in which particles are held in a chamber.

Electrostatically Charged

A surface that carries an electrical charge that attracts particles.

Energy Star

Is a program that was developed in 1022 by the Environmental Protection Agency (EPA) to identify and promote products that are energy efficient. Devices carry the Energy Star rating are generally 20 - 30% more efficient than non-rated models, which save the consumer money and help protect the environment.

US Environmental Protection Agency (EPA)

Is responsible for implementing laws that promote public heath by protecting our air, water and soil from harmful pollution.

ETL Certified-Electrical Testing Lab (U.S.A.)

A product bearing the ETL Listed Mark is determined to have met the minimum requirements of prescribed product safety standards. Moreover, the mark indicates that the manufacturer's production site conforms to a range of compliance measures and is subject to periodic follow-up inspections to verify continued conformance.

Germicidal Ultraviolent Light

Part of a purification process that uses (UV) light to destroy harmful bacteria, viruses, fungus, mold, and volatile organic compounds, on food, air, and water at the cellular level. It is often used in combination with various filtration systems to help remove harmful micro-organisms.

High Efficiency Particulate Air (HEPA)

Is a type of air filter that must meet the standard of trapping at least 99.97% of all particles larger than 0.3 microns. A HEPA filter is widely regarded as the ultimate filter. A HEPA Filter is normally made from fiberglass or other fibrous material and is capable of trapping microscopic particles and organisms as small as .3 micrometers in diameter and smaller. Specific standards must be met to qualify a filter for the HEPA name.

Highly Reactive

Is short life, high energy.


Stands for Heating, Ventilating, and Air Conditioning.

Hydrogen Chloride

Is a colorless gas that can be corrosive in the presence of moisture.

Hydrogen Sulfide

Is a colorless poisonous gas that smells like rotten eggs.

Indoor Air Pollution

Describes the contaminants inside of a building. It is often ignored, but can actually be worse than outdoor air pollution due to poor ventilation. Sources of indoor air pollution include tobacco smoke, pet dander, dust mites, mold, pollen, pesticides and gases such as radon and carbon monoxide.

Indoor Air Quality (IAQ)

Is a term referring to the air quality within a confined space, especially as it relates to the health and comfort of the occupants. It can be affected by such things as mold, bacteria and gases, and is becoming an increasingly more concerning health hazard than outdoor air. The IAQ is measured according to the guidelines set by the government and is used to measure the efficiency of air purification and filtration systems.


Use high voltage electricity to electrically charge air molecules and create negative electrons. The negative ions charge small particles that clump together and become too heavy to remain airborne. These charged particles end up sticking to any surface available. This process often creates ozone as a dangerous byproduct. We do not recommend using an air purifier with an ionizer.

Minimum Efficiency Reporting Value (MERV) Particle Filtration

Are residential ratings from 1-12, the higher the number the more efficient the filter is at capturing particles. MERV 13 is for Superior Commercial Buildings.

Micro Particle

A small piece of matter that cannot be seen with the naked eye.


Is 1/1000 of a millimeter - 1 x 10-6.


Are microscopic organisms that are present virtually everywhere. They aid in the breakdown of dead material and recycle nutrients in the environment. Mold will grow and multiply with sufficient moisture. It can be a concern in the home and exposure can cause damaging health effects.


Is a group of at least two atoms – smallest particle of matter.

Multiple Chemical Sensitivity (MCS)

Is an unusually severe sensitivity to many different pollutants, including solvents, Volatile Organic Compounds (VOC’s), perfumes, diesel, smoke and chemicals in general. MCS is different from true allergies because it has no known cause and its processes are not fully understood. Studies show that MCS is more common in women than men and most often younger adults between the ages of 30 and 50.

Nanometer (nm)

Is one billionth of a meter 1 x 10 -9.

Natural Ventilation

Is the process of supplying and removing outdoor air through an indoor space by natural means such as windows, doors and cracks in the home.

Negative Ions

Are invisible molecules that are odorless and tasteless. We inhale them in abundance while in certain environments such as mountains, waterfalls and beaches. They are believed to produce biochemical reactions that help alleviate depression, relieve stress and boost our energy. Unfortunately, modern homes and offices seal out negative ions and most appliances and modern building materials produce an excess of positive ions, which contribute to decreased energy, fatigue and depression. Negative ions work to clean the air by attaching to positively charged particles and weighing them down, until they drop out of the air.

Negative Pressure

Is a condition that exists when an enclosed area has a lower barometric air pressure than the open area surrounding it.


Is the release of gas from various materials used in building or repairing buildings such as sealants, lubricants, and adhesives. These gases seep from cracks and crevices where they are trapped, absorbed, adsorbed, evaporate, frozen or have caused a chemical reaction that produces off gassing. Off-gassing is the evaporation volatile chemicals in non-metallic materials at normal atmospheric pressure. Materials such as paints, stains and varnishes can produce significant off gassing in your home or office. The off gassing of Volatile Organic Compounds (VOC’s) seriously affect the quality of indoor air.

Organic Pathogen

Is a live, naturally occurring, harmful bacteria or virus.


Is an oxidizing agent that is highly reactive and used for cleaning and deodorizing for air and water and for the treatment of industrial waste. It is a tri-atomic molecule that consists of three oxygen atoms. It is highly unstable and reacts with airborne particles by launching the third oxygen atom at anything near it. When this oxygen atom reacts with the airborne particle, a tiny explosion occurs and destroys the particle. Ozone air purifiers are highly effective against both dust and microscopic organisms, but can be unhealthy if exposed to large quantities.

Particulate Filter

A filter that can remove particles as small as .03 microns from the air.

Pet Dander

Is the tiny scales of an animal's dead skin that is shed. Pet dander can float in the air for a long time before sticking to a surface allowing it to be spread widely around a home.


Is the process of using photons of light or other radiant energy to accelerate a chemical reaction acting either directly or by exciting a catalytic substance (semi-conductor) that in turn brings about the main reaction without consuming itself. Photocatalysis is the opposite of photosynthesis.

Photocatalytic Oxidation

Is the process of using photons of light or other radiant energy, in our case UVC radiation combined with TiO2 (titanium dioxide) creating free radicals that in turn destroy both molecular and cellular structure converting harmful gases to benign ambient gases. These gases are finally reduced to CO2 and water.

Photocatalytic Oxidation Chamber

Are compartments within air filtration equipment where the photocatalytic oxidation takes place.

Submicroscopic Particles

Are extremely tiny particles that cannot be seen even under the most powerful light microscope available.

Sulphuric Acid

Is a strong mineral acid, it is used in car batteries, oil refining, fertilizer manufacturing, and many other industries.


Is an index for reporting daily air quality. There are six categories each assigned to a specific color to make it easier for people to understand the air pollution and associated health concerns for their community.

Titanium Dioxide (TiO2)

Is a naturally occurring mineral element and is found in nature in minerals namely rutile, anatase, and rarely brookite TiO2. It is also found in high-pressure forms in the Ries Crater.

Toxic Chemicals

Are very harmful chemicals.

Volatile Organic Compound (VOC)

Is an organic chemical compound that can pollute the indoor and outdoor atmosphere and cause serious health problems and illness to living organisms. Volatile Organic Compounds (VOC’s) are gases emitted by a wide range of products found around the home such as paint and lacquers, cleaning supplies, pesticides and building materials. VOC’s can also be found in office equipment like copiers and printers, correction fluids, carbonless copy paper, glues, adhesives, permanent markers, and photographic solutions. Because of the high concentration of VOC’s, pollution indoors can be up to five times worse than pollution outdoors.


A chemical that is used in several industries as a solvent such as leather, printing, and rubber. Exposure at high levels for short periods of time can cause skin, eyes, and throat and lung irritation.