What are Dust Blockers
July 20, 2022

Dust Management


No matter what industry you are in there is always dust you cannot see. Whether it is the food industry, bakeries, schools, car manufacturing plants, shop refit industry, warehouses, hospital works, care homes or even just in the office or at the doctor’s surgery. 

With the Dust Blocker Pro range, we can offer a full service from specification to long term lease and full filter service. We come on site and measure the dust particles in the air and take several measurements. We then put that data into a special form which in turn provides us with an average and also a recommendation of what machine is needed to bring the air dust levels to meet the current EU recommendations.




What will a Dust-Blocker do for me?


Dust in the air is often dust we cannot see but can also be the more harmful dust. Dust-Blocker is also often used in bakeries to keep the flour dust in the air down.


Dust-Blocker is also used to reduce the cleaning needed when handing over a shop fit out, a hospital ward or an office and other environments.


They filter out the dust that normally settles over the area. We can offer a full set up and initial clean service
using these machines if needed.


Dust Management Regulations


Considering the very strict regulation of 0.075 mg per m³ of silica dust in the breathing zone of a user corresponds with a volume of 0.5 cm silica dust in a plastic coffee cup in a room with a surface area of a football pitch and a height of 4 metres!). It is virtually impossible to meet these strict requirements without using room cleaners, such as the Dust-Blocker range that are specifically developed for this purpose.


Under virtually all circumstances, Dust-Blockers are able to provide great results. This is essential for the construction supervisor,

considering the announcement by the Social Affairs and Employment Inspectorate that the employer is obliged to prove that exposure to hazardous substances (respirable silica, wood dust, etc) on the workplace remains below the current limit values, whereby the total system (tool, extraction module, vacuum cleaner, water supply) is measured as point of departure.

Fines for not observing the regulations may run up to £8,000 per workplace, and it is even possible that the work activities must be stopped.



What can you do to keep your lungs healthy?


By working carefully and using Dust-Blockers to filter the air, you breathe in 10x up to 100x less particulates. Every breath counts! Every day, day in and day out, you have to be committed and focused on working carefully. This will cost you time now, but the profits will only become clear in about 10, 20 or 30 years.


We are specialised to develop devices to improve indoor air quality, with low space and energy requirements, as well as for variable locations. The aim is to establish a circulating air stream in closed rooms or halls. Because of continuously circulating air layers all fine particulates get disposed of by our special filters in the machine, so the clean air can be fed back into the room.


The composition of the particles in the air is very different. They consist of natural and anthropogenic components. These particles originate mainly from industrial processes, transport, energy, construction activities and agriculture. Also, airborne bacteria, germs, spores, fungi and pollen are disposed by our excellent filter media and contribute a great extent to the improvement of the health status. These micro small particles are found almost over weeks and months in permanent limbo in rooms again.

10 reasons to buy a Dust-Blocker



  • A general dust reduction up to 95%. (Dust / fine-dust) with possibilities to get Dust values in areas between ISO-6 - ISO 9(ISO146441-1).
  • Large Dust reduction can avoid the building of an ATEX dust explosion-proof room.
  • (Ex)Aerosols in air are filtered, what reduces errors in machines and computers.
  • Avoid dust on packing material/finished goods.
  • Easy upgrade of labour limit values.
  • Clearly better air to breathe Dust / Pollen / Bacteria free.
  • A huge contribution to the improvement process at working places.
  • A clear reduction in soil and end cleaning.
  • Saving in energy cost up to 30%.
  • Castors make the Dust-Blocker ultra-manoeuvrable.

To Measure is to Know

These days we are able to establish locations where fine dust occurs and to measure the concentrations. The government recognises the risk of working in an environment with fine dust and is tightening up regulations

What is the Workplace Exposure Level for Dust? Understanding TWA and STEL

By Andy Potter • September 7, 2026
If you're responsible for health and safety in your workplace, you've probably encountered the terms "workplace exposure level," "TWA," and "STEL." But what do they actually mean, and why do they matter for dust management? The simple answer: these are legal limits set by the Health and Safety Executive (HSE) to protect workers from harmful dust exposure. If you're not monitoring them, you're flying blind and potentially breaking the law. What is Workplace Exposure Level? A workplace exposure level (WEL) is the maximum amount of a harmful substance that a worker can be exposed to during their working day without suffering adverse health effects. For dust, it's measured in milligrams per cubic metre of air (mg/m³). The HSE sets these limits based on scientific evidence about how different dust types affect human health. Different dusts have different exposure limits because they pose different risks. For example, the WEL for respirable crystalline silica is far stricter than for general inert dust, because silica is significantly more harmful to the lungs. Think of it this way: the WEL is your compliance baseline. If dust concentrations in your workplace stay below this limit, you're meeting your legal obligation. If they exceed it, you have a duty to investigate why and take corrective action. Download the HSEs guidance on workplace exposure limits If you want to understand the levels in your workplace contact us about our silica air sampling services TWA: The 8-Hour Average TWA stands for Time-Weighted Average, and it's the most commonly referenced exposure limit. The TWA measures the average concentration of a substance over a standard 8-hour working day. Here's why that matters: dust exposure isn't constant. Workers might face high concentrations during certain activities (cutting, grinding, demolition) and lower concentrations during others. The TWA accounts for these fluctuations by averaging them out over the full shift. This recognises that workers can tolerate brief periods of higher exposure, provided the average stays within acceptable limits. For example, the current WEL for respirable crystalline silica is 0.1 mg/m³ as an 8-hour TWA. This means that if a construction worker is grinding stone for part of their shift but doing lower-dust tasks for the rest, the daily average should not exceed this level. The advantage of TWA is that it's practical for real-world work. Few jobs maintain constant dust levels. The disadvantage is that it can mask dangerous peaks, if a worker is exposed to very high concentrations for a short period, the TWA might still look acceptable. STEL: The Short-Term Exposure Limit STEL stands for Short-Term Exposure Limit, and it's your safety net for peak exposures. A STEL is the maximum concentration a worker should experience during any 15-minute period in a working day, and no more than four such periods should occur, with at least 60 minutes between them. The STEL exists precisely because the TWA can obscure dangerous peaks. Imagine a worker exposed to very high silica dust for 15 minutes whilst cutting stone, then lower levels for the rest of the day. The TWA might be within limits, but those 15 minutes could still cause significant lung damage. There should be a maximum of 4 STEL's in a single working day and there must be at least 60-minutes between each STEL period. Not all dusts have a STEL, but those that do (like respirable crystalline silica) reflect a recognition that short, intense exposures carry genuine health risks that the 8-hour average doesn't capture. Reducing personal exposure to inhalable dust with Cleanspace Respirators

What Is Respirable Crystalline Silica Dust?

By Ultra Protect • September 7, 2026
Learn what respirable crystalline silica dust is, the symptoms, UK exposure limits, and how to test for it on site. A practical guide from Ultra Protect.