Yes, our dust extraction systems undergo Thorough Examination and Testing before leaving our warehouse, so you can rest assured that it’s compliant and in peak working condition when it reaches you. Our LEV testing is carried out by qualified LEV engineers who hold BOHS (British Occupational Hygiene Society) certifications (e.g. P600, P601, P604). Click here to find out more about our TExT process.

The DUSTEX® Raptor is a lightweight portable unit. The majority of DUSTEX® units, such as the DUSTEX® DustMaster® Pro and DUSTEX® Wandafilta Pro, are on castor wheels meaning that they are very mobile and can easily be moved around site as work progresses.

Wherever possible, hazardous dust should be filtered rather than simply extracted from the work area, because the dust could create a hazard where it is being emitted. RVT offer a wide range of ATEX certified units and our consultants can help you select the best solution for your application. Phone us on 0808 178 3286 to discuss your requirements.

This answer isn’t straight forward. The COSHH definition of a substance hazardous to health includes “dust of any kind when present at a concentration in air equal to or greater than 10 mg.m-3 8-hour TWA of inhalable dust or 4 mg.m-3 8-hour TWA of respirable dust”. However, there are 500 substances individually listed within EH40 Workplace Exposure Limits, therefore we would strongly recommend that you download a free copy of this document from the HSE website.

RVT's EU4 filter is washable and can be re-used, which makes it both sustainable and cost effective. Our EU7 and HEPA filters are disposable.

What is an 'air scrubber' or a 'dust scrubber'?

When construction workers ask for an 'air scrubber', quite often they are looking for a portable dust extraction/ filtration unit. Typically, 'air scrubbers' do not feature a capture hood and so they cannot be used to effectively capture dust at source - this results in a lot of airborne dust and the work force is not adequately protected from respiratory hazards.

To achieve effective dust control, the HSE recommends using an LEV system that has a suitable size capture hood and sufficient air flow. They also recommend containing the work area as much as possible to reduce the risk to other people who may be nearby.

An EU4 filter is classified as a filter which captures 90% of airborne particles, measured by weight. However, it must be remembered that the majority of harmful pollutants are so tiny that they make up only a tiny proportion of the dust by weight. As such, an EU4 filter is generally used as the first level of filtration (not the only level of filtration) in an RVT dust extraction unit.

An EU7 filter is classified as a filter which is between 80 and 90% efficient at capturing dust particles of 1 micron in size.

H13 and H14 HEPA filters are within the highest tier of HEPA air filtration and are considered to be medical-grade. A H13 filter can remove 99.97% of harmful particulate whilst a H14 grade filter will remove 99.99%.

RVT offer a wide range of HEPA extractor units, our most popular units are the DUSTEX® Raptor, DUSTEX® DustMaster® Pro and DUSTEX® Wandafilta Pro.

A HEPA Extractor is a fine filter dust extractor.

HEPA stands high-efficiency particulate air, and refers to the efficiency of the filter at trapping extremely fine airborne particles. Filters are regarded as a ‘true HEPA’ (EU13 or higher) if they filter to an efficiency of more than 99.97% in 0.3 Microns in size.

The 3C's® (capture, contain, control) is a methodology created by RVT Group for the control of site hazards.

This methodology can be applied to dust control;

1. Capture the dust at source by positioning the dust extraction hood as close as possible to the activity.
2. Contain the immediate work area to prevent dust/fume migrating.
3. Control the hazard further, by putting the room under negative pressure; this will ensure zero dust migration.

The DUSTEX® DustMaster® Pro has specifically been designed for use in sensitive environments such as hospitals, laboratories, food manufacturing factories and other 'live' environments. The DustMaster Pro is a high airflow unit which is capable of creating a negative pressure, furthermore it is a 100% sealed unit, therefore ensuring zero dust migration. The DUSTEX® DustMaster® Pro can also hold up to 3 stages of filter media, including either a H13 or H14 HEPA filter.

In 2020, the EH40/2005 ‘Workplace exposure limits’ were revised, specifying that exposure limits for Hardwood dusts has reduced from 5mg/m3 to 3mg/m3, and if hardwood dusts are mixed with other wood dusts, the new WEL will apply to all wood dusts present in that mixture.

As such, we recommend using a high airflow dust extractor with a HEPA filter to ensure that workers are suitably protected from wood dust. RVT's Dustex Raptor, DUSTEX® DustMaster® Pro and DUSTEX® Wandafilta Pro all feature a HEPA filter, but we also offer the DUSTEX® DustoMat 10 and the DUSTEX® D4 Extractor ATEX which have been specifically designed to capture and filter sawdust and wood shavings from woodworking machinery. For more information about keeping workers protected from exposure to wood dust, please download our Wood Dust Whitepaper.

The DUSTEX® DustMaster® Pro is the most efficient dust filtration unit we have brought to market to date. With a high-performance mixed-flow fan, a 100% sealed capture chamber, and 3-stages of filter media including HEPA, this unit would be first choice for any stone cutting activities.

The DUSTEX® DustoMat 16 has also been designed to manage high volumes of stone dust created by dry-cutting masonry work and could be a viable option.

We have a wide variety of portable dust extraction units that are suitable for stonemasonry. If you speak to an RVT consultant we can discuss your options and select the most suitable unit for your activities.

The RAVEX® Wandafilta Plus - Extraction & Filtration Kit is suitable for both dust and fume control and is therefore popular for internal demolition.

We have a wide variety of dust control solutions that are suitable for demolition. If you speak to an RVT consultant we can discuss your options and select the most suitable unit for your activities.

Seal the work area using a containment system, such as the DUSTEX® Air-lock or the DUSTEX® Aire Guardian Rigid Containment Unit and install a high pressure dust extraction unit, such as the DUSTEX® DustMaster® Pro. When the dust extraction unit is switched on, the high airflow will cause a negative pressure environment. The pressure can be monitored using the MONITEX® Differential Pressure Gauge

Negative pressure is created by extracting air out of an area; when the pressure inside the room becomes less than outside the room, it is said to be a negative pressure environment. This is a great way to control airflow, which means that it is also a great way to control the movement of dust. Negative pressure dust extraction is often used in sensitive environments to ensure zero dust migration.