Aerosols

Highest extraction of aerosols

Aerosols can contain viruses and bacteria. Since Corona, people have become more aware of the risk of infection from aerosols than before. They know that these contain bacteria and viruses, which can transmit pathogens. The fear of infection is particularly big in dental practices, where patients cannot wear mouth and nose protection during treatment. A saliva ejector is not sufficient to capture all possibly contaminated particles. An air filtration system with a transparent suction hood offers an extended extracting area to protect patients, medical staff and doctors from particles optimally.

Which extraction systems are suitable?

TBH filter and extraction systems of the DF series are suitable for extracting aerosols, which can contain viruses like Corona and bacteria from the ambient air in a dental treatment or patient's room.  

If you have a highly contaminated or large room, please contact our TBH sales team. Together we can work on an indiviual solution for you.

Precise extraction

The DF series is the right solution for clean ambient air in dental treatment and patient's rooms. Those systems filtrate all airborne particles, including viruses like Corona, and bacteria safely from the air and keep them in its integrated, easy changeable filters. 

For your safety

Safely extracting aerosols and airborne particles

Approved particle filters

MPPS = most penetrating particle size

Coronaviruses have a size of 20 - 160nm, which is 0.02 -0.16µm. Our systems extract and separate all particles <0.1µm and >0,3µm to 100% effectively, and hardly separable particles in between to 99.95%. Smaller particles remain in the filter because of gravitational force. 

W3 approved

Coronaviruses are easy to extract for this system. The integrated TBH H13 filters are tested in accordance with EN1822 criteria and their effectiveness in accordance with ISO 15012-1. High safety requirements are thus met. Awarded W3 and the DGUV seal, TBH filter and extraction systems offer triple protection for humans, environment and machinery and is accordingly listed on the "IFA positive list". TBH is specialized in laser dusts with a confirmed separation efficiency of up to 1nm in laser processes.

H13 filter

H13 filter = 99.95 % separation efficiency

Influences on degree of separation

  • Larger filter surface

  • Longer contact times

  • Reducing volume flow.

  • Criteria in accordance with EN 1822

  • Approved efficiency in accordance with ISO 15012-1

 

Double adsorption power

The adsorption of the gaseous substances takes place with activated carbon (physical adsorption) and BAC granulate (chemical adsorption).

Additionally collecting a very wide range of gases and odors - > neutralization by chemical bonding with attached to the substrate reactant.

Filter possibilities

 

Mouth-Nose-Protection

Respiratory protective mask

Extraction system

Protection

Protects against drops in the exhaled air of the person wearing the mask; however, it does not reliably protect against viruses and bacteria

Protects the person wearing the mask from inhaling the smallest airborne particles, filtrates at least 78% of viruses or bacteria from the air breathed by the wearing person

Protects against viruses and bacteria in the room air, filtrates them up to 99.95%

Suitability

For medical and nursing staff to protect patients from respiratory emissions

Without exhalation valve: for medical and nursing staff, rescue and emergency services to protect against transmission of viruses/bacteria

 

With exhalation valve: for non-medical use to protect against aerosols containing viruses/bacteria

For protection against persons in waiting or treatment rooms, offices, public facilities;

 

Is no medical device according to §3 Art. 1 of the MPG

Usage

Comprehensible handling,

Protection of other persons, if one’s infected

Use of mask only after instruction, otherwise no sufficient protective effect

Comprehensible handling,

greatly reduces the number of particles (=viruses, bacteria) in the room due to 4-times room air change and H13 filter

Period of usage

Have to be disposed after each use

Depending on classification up to 8 hours or suitable for reuse

System for continuous operation, filter change after status display

Tested

According to EN 14683, standard for "Surgical masks" by the manufacturer

According to EN 149, standard for "Particle filtering half masks" by independent testing body

According to EN 1822, standard for "HEPA filters with very high efficiency (EPA, HEPA, ULPA)" by the manufacturer

Source: PM DGUV: “Mund-Nase-Schutz ist keine Atemschutzmaske” vom 27.03.2020 (“Mouth-Nose-Protection is not a respiratory protective mask” from March 27, 2020)

FAQ Corona

Yes, because according to the current state of knowledge the coronavirus has a size of max. 20-160nm and is therefore larger than laser particles (>=10nm), for which our systems are currently mainly used. TBH filter and extraction systems can effectively extract coronaviruses and filter them out of the air. This prevents the viruses from spreading through the air and settling on surfaces through which people can be indirectly infected with the SARS-CoV-2 virus.

H13 filters from TBH are tested in accordance with DIN EN 1822 and therefore offer safe quality. They filter 99.95% of all harmful particles (0.1-0.3µm), including coronaviruses. In comparison, a mask of class FFP3, in accordance with DIN EN 149, only retains 98% * of these particles (0.6µm). The DGUV recommends using an extraction for personal protection before wearing suitable protective equipment. H13 filters offer sufficient protection. They have lower pressure loss,  compared to the H14 filter, and thus a better energy balance as well as a longer service life.

*Quelle: Berner Safety

Yes. The 99.95% separation efficiency in H13 filters relates to particles of the "most penetrating particle size" (short MPPS, or in German "most penetrating particle size"). These are particles, sizes between 0.1-0.3 µm, represent, the so-called “worst case” for the filter's separation efficiency. Particles that are outside this spectrum, i.e. larger or smaller, are 100% captured by the filters due to various physical effects (according to EN1822).

When changing filters, do that in a separate room, wearing adequate PPE. Use a disposable pad when changing the filter. Put the used filter into the airtight transparent bag, which is included in the system`s delivery, and seal it.

In general, filters are changed according to the filter status indicators on the system.

The following recommendation also applies to filter and extraction systems used in medicine, aesthetics and dental, regardless of the filter status display:

Interval

 
Weekly
Replace pre filter mat
Half-yearly
Replace main filter

 

The exchange takes place regardless of the filter status display for the following reasons:

Possible contamination of filter with viruses and the growth of fungi and bacteria on the surface. Biological contamination cannot be monitored via the filter display.

Saturation of the activated carbon with process gases and their aging (even with a low pollutant content). This cannot be monitored via the filter display.

TBH filter and extraction systems are not a medical device in accordance with §3 Art. 1 of the MPG (German Medical Products Law), because the systems do not come in contact with the patient. The systems extract the particles safely from the ambient air and serve primarily the occupational safety than patient’s safety. The systems have no therapeutically use. Therefore, they do not need a medical approval according to the European standard DIN EN 60601-1.

Yes, we have prapared a flyer for you. This TBH Corona protection PDF contains all information shown on this site. 

 

The extraction arms can be easily disassembled and then placed in a tub with disinfectant cleaning solution (observe the manufacturer's instructions). After a short exposure time, clean the arms with a nylon brush and then disinfect them (scrub disinfectant).

In addition to the filter performance, the most important thing for the efficiency of an extraction system is correct capturing at the point of origin. If it is too far from the source of aerosol formation, a high degree of separation will not help either. This process is comparable to a sieve that can only filter what goes through and not what passes it. It makes no difference whether a UV-C light lamp or another antimicrobial device is used additionally to extraction. TBH filter and extraction systems have a H13 filter that captures 99.95% of the hard-to-separate particles in the spectrum 0.1µm - 0.3µm, as well as 100% of larger and smaller particles. Therefore, they already offer the best possible protection - not only against particles but also against viruses and bacteria.

UV-C light lamps in addition to extraction systems with TBH filters are not necessary. Correct capturing is crucial for efficient extraction.

U15 filters (degree of separation 99.9995) have a 3-time pressure loss compared to H13 filters (degree of separation 99.95), which leads to a weaker extraction capacity of the system. Much more important than two decimal places in the degree of separation is to capture the aerosols / particles at the point of origin, for which an appropriate extraction power is required. A H13 filter guarantees more safety and efficiency against viruses, bacteria and aerosols over a longer time than a U15 filter.

The system is delivered ready for use. After installing the extraction arm, the system is ready for operation.

Filter service lives are very dependent on the application and therefore, cannot be predicted generally. Normally, the change takes place according to the filter status display. In medicine / dental / aesthetics applications, the filters have to be changed at least every ½-year due to the bacteria / nucleation.

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Direct contact:

Telephone: +49 7082 9473-0
Telefax: +49 7082 9473-20
E-Mail: infotbh.eu

 
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TBH® GmbH - Absaugtechnik, Filtertechnik, Umwelttechnik
TBH GmbH
Heinrich-Hertz-Str. 8
DE-75334 Straubenhardt

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Frequently asked questions

All important at a glance

Filter and extraction systems deal with a topic that is important for everyone, but can also cause confusion. Therefore, we have created a list of the most frequently asked questions exclusively for you.

Glossary

Brief explanations of the most used terms

Since there are many terms on our website, which may not be commonly known by everyone, we created this list of the most used words in filter and extraction technology, and their respective explanations. 

Things to know

The essentials in a nutshell

Our systems are for your protection. We take care of your health, the environment and longer machine running times. Find out the reasons why filter and extraction systems are so important .

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