90 million worldwide products already distributed

How Do Sharp Plasmacluster Air Purifiers Work?

Sharp Electronics is a world leader in HEPA filter air purification technology. With over 90 million air purifiers already in service we have the range to keep your customers, employees and school pupils supplied with clean air.

Sharp HD50 Hepa Filter Air Purifier Room

All You Need to Know About Air Purifiers

Be it in any shape and design; an air purifier is an indoor device that absorbs and filters harmful particles from its surroundings.

Is air purifier good for health, and why?

An air purifier is primarily used to purify the surrounding air and improve air quality. This can limit the spread of harmful particles and allergens to prevent respiratory diseases or allergy problems in humans. The device is widely used in homes, offices, learning centres, and hospitals.

Common Indoor Pollution Problems

Hidden in your house could remain a wide variety of invisible contaminants. Be it allergens, haze, bacteria, and viruses, as well as odours and dust that are invading from outdoors.

Common indoor problems are often relating to air and odour pollution:

  • Allergens

Plant-based allergens such as pollen will cause allergic reactions. Other allergens such as house dust, mould, and dust mites are common problems in almost every household, classroom or business.

  • Bad smells from various sources

Odours normally come from pets, cigarettes, and food.

  • Bacteria and viruses

Contaminants and germs such as bacteria and viruses will cling to people and carry them home from outside. Also, a sick family member or work colleague who sneezed or coughed will cause the germs to spread inside the home / business / school environment.

  • Volatile organic compound (VOC) substances from chemicals

Many volatile organic compounds (VOCs) are human-made chemicals used and produced for the manufacture of pharmaceuticals, paints, and refrigerants.


VOCs include various chemicals, some of which may have short- and long-term adverse health effects.

  • Stagnant air that doesn’t smell fresh

Especially the air in a closet, many clothes that are kept in that small, closed place could cause an unpleasant odor to linger around the room.

An Air purifier is good for health if chosen correctly

The main point here is that the air purifier should be chosen correctly if your utmost purpose is to purchase it for general good health in all environments.

  • Plasmacluster technology – Plasmacluster ion generator discharge and emits the same positive and negative ions that occur in nature. Plasmacluster technology is Sharp’s original air purifying technology that removes airborne mould and viruses. 
  • plasmacluster.jpg
  • HEPA filter is the ‘king’

HEPA filter-based air purifiers produce no harmful by-products. They can effectively remove allergy-causing and toxic substances from the air, leaving only fresh air behind.

You often came across the word ‘HEPA,’ but what is HEPA? It stands for ‘High-Efficiency Particulate Air (filter).


  • Strong suction and Coanda airflow

Powerful air suction and unique airflow quickly and efficiently collect dust and other particles.


Scientifically Proven Benefits of Air Purification

Based on Marilia Coutinho, a Brazilian researcher, there are enormous scientific research that have proved the effectiveness of air purifiers.

Moreover, recent studies showed that air purifiers protect against allergens and improve cardiovascular health and lung function.[1][2][3]

Let the Science Talk


  • Reduced morbidity and mortality

Based on the study of W.J. Fisk, reduced morbidity and mortality due to reduced exposure to harmful particles from outdoor air is the largest potential benefits of indoor particle filtration.

  • Improved endothelial function

Another recent study concluded that air filters had reduced indoor fine particle concentrations by 60%.

This study compared the health effects with or without HEPA purifiers. As a result, they concluded that air filtration was correlated with improved endothelial function* and decreased inflammatory biomarkers concentrations.

*Endothelium- a thin layer of single flat cells that line the interior surface of blood and lymphatic vessels

  • Improvement in lung function

The First Nation’s encouraging finding suggested reducing indoor fine particulate matters (PM2.5) with an air filter may improve lung function.


Summary: Are air purifiers good for your health?

In Short, the answer is a ‘Yes’ if you have chosen the right purifier. One thing we can confirm is air purifiers can reduce the levels of indoor PM2.5 with a wide range of health improvements.

Sharp’s Plasmacluster Ion Technology has been proven by test data worldwide to provide pure, healthy, safe air for homes and various industries. Sharp’s patented Plasmacluster air purifying technology removes airborne mould and viruses by generating positive and negative ions.

Choose the Best Air Purifiers for Your Loved Ones


High-density Plasmacluster Ions Air Purifier

Exclusive air purifying technology from SHARP

  • With Sharp’s proprietary Plasmacluster ion (PCI) technology, positive and negative ions are discharged when the air purifier is switched on. These ions deactivate airborne contaminants by attaching to them while extracting a hydrogen compound to break down the protein membrane, resulting in water molecules, which are returned to the air.
  • Plasmacluster Technology emits more positive and negative ions in a room than even those found in a forest. It is proven to be safe and highly effective, no matter how high the ions’ density is.


  • Plasmacluster is thus increasingly finding applications in various areas of activity, such as in businesses, in addition to household use.

High Density 7000, 25000 & 50000 (NEXT)+ [4]


Different ion density provides different levels of benefits. Plasmacluster air purifiers with ion density 7000 can purify the air, remove odors, and reduce static electricity.

Meanwhile, Plasmacluster air purifiers with ion density 25000 can do a lot more than purifiers with ion density 7000. The functions include but are not limited to air purifying, odors removal, and static electricity reduction. Also, it is capable of suppressing the adhering viruses, mould fungus, and pollens. Strong odors like tobacco can be removed as well. This kind of air purifier tends to have a 5x elimination speed compared to those with ion density 7000, thus making skin-beautifying effective.

High-Density NEXT purifiers are way more powerful. It produces ion density 50,000. Other than the listed effects above, these purifiers can create a less stressful environment that is easier to maintain the ions’ concentration. Pet owners are advised to have a purifier with High-Density NEXT in home since they can suppress bacteria that cause pet skin disease. Removal of odor-causing bacteria and adhering excrement odor are also what High-Density NEXT purifiers are capable of. In conclusion, these purifiers have more purification ability compared to Plasmacluster air purifiers with ion density 7000.

* Note: Above data are verified under the test condition. The effects may differ depending on the actual usage/environment.

* The number in this technology mark indicates an approximate number of ions supplied into air of 1 cm3, which is measured around the centre of the applicable room floor area (at 1.2 m height above the floor) when the product is placed close to a wall at the MED mode setting.


  • Plasmacluster provides you with natural and safe air. This unique technology from Sharp applies the power of nature. Learn more

Solutions for All Air-quality Concerns

Plasmacluster Ions Clean the Room Air

Test results have proved all Plasmacluster Ions can remove airborne mold and allergens. Also, it can effectively reduce the growth of adhering mold in your house as well.


Suppressing the Activity of Airborne, Adhering Viruses and Microbes [5]

Viruses and microbes are the things that parents worry about the most as they will negatively affect children and oldies’ health.

Tested by Pasteur Institute in Ho Chi Minh City, Vietnam, Shokukanken Inc., and Japan Food Research Laboratories, all the three experiments concluded a 99% reduction of airborne and adhering viruses and microbes.

Removing Stubborn Odors[6]


Plasmacuster Ions air purifier can deodorize sweat odor clinging to clothing in approximately six hours. Also, it can deodorize damp smell on clothes that drying indoors in around three hours.

Reduction of Static Electricity [7]

Were you always annoyed by the sudden ‘shock’ feeling when touching your family or wearing a cloth? That’s static charges! Our purifier can reduce static electricity that annoys you.

Skin-Beautifying Effects

The test result showed an effect of providing luster to skin after 20 minutes of SHARP air purifier operation.

Plasmacluster Mechanism

What Can Our HEPA Filter Capture?

High-performance filters capture airborne dust particles.



  • 99.97% capture and removal of 0.3-micron dust particles
  • Tree pollen and grass pollen that cause allergy
  • Allergens like dust mite feces, animals’ dander, and mold
  • Viruses and airborne microbes
  • Odors

The concept of different particle sizes


Infographic by Visual Capitalist

Average Particle Size (microns, μm) that HEPA Filter Can Capture



Children have a weaker immune system than adults. Thus, it is important to provide them with a clean air environment. Choosing the right air purifier can protect your kids from visible contaminants such as dust and pet hair to hidden impurities such as viruses and dust mites.