For the filtration of coarse dust particles, Freshfilter provides P1 and P2 fil-ters. These filters filter out particles larger than 4 microns with an efficiency of 50% to 90%, which are classified as F5 to F9 according to EN779. Also, in case only carbon filters are used in an application, it is advisable to put a P1 or P2 filter in front of it, as this will prevent premature clogging of the carbon filter by dust particles.
In accordance with EN1822, Freshfilter produces H13 absolute filters (aka P3). Unlike coarse dust filters, these are tested individually for leak-tightness, and come with a test certificate. This shows how the filter has been tested and under what conditions.Harmful fine dusts such as asbestos and quartz dust are captured by a P3 filter, which is why this filter is often used in demolition projects. Because this filter is very sensitive to damage, it is always recommended to install a coarse dust filter (P1 or P2) in front of this filter. The coarser particles are thus pre-filtered and cannot damage and/or saturate the P3 filter.
Flushable dust filters
We also produce special H10 filters on request for the FFMultibox series. The filter grade of these is in between P2 and P3 filters. This special filter has a flushable medium with Teflon coating, for extremely dusty situations. In addition, the Teflon layer is also anti-static, even damp dust particles do not stick to the filter cloth. Combined with the self-cleaning properties of the FFMultibox, this ensures an unprecedented long service life!
Soil remediation often releases harmful gases and fumes, which can cause serious long-term damage to your respiratory system. We supply carbon filters for this application.Activated carbon (derived from peat, coal or coconut husk) has a huge surface area, and can therefore adsorb organic substances. Inorganic vapors are captured with special impregnated carbon. A chemical sub-stance is added to this activated carbon, to capture these vapors by chemsorption (rather than adsorption).EN12941 provides a clear classification for different che-mical substances and their ad/chemsorption requirement.
– A: Activated charcoal.
– B: Impregnated carbon for capture of inorganic vapors.
– E: Impregnated for capture of acids
– K: Impregnated for capture of ammonia compounds
Of course, we can also supply carbon filters that contain multiple chemical substances, such as ABEK carbon filters.Through our years of experience in the field of carbon, we can provide perfect advice with the carbon to be used; because every situation is different, we alone carry over 25 different types of (impregnated) carbon, each with a specific application! Each type is in stock and can therefore be delivered quickly. Freshfilter fills carbon filters as the only manufacturer of overpressure filters under tremendous pressure, putting in over 10% more carbon compared to filters from other brands.