Absolute Filters are those that guarantee the highest level of efficiency that today is technically achievable in the filtration of air.
Due to their high level of efficiency, they are used mainly for ventilation and conditioning in the electronics, pharmaceutical and photographic industries, and for controlling the atmosphere in hospitals, laboratories, clean rooms and data-processing centres.
Our LOW-EFFICIENCY ABSOLUTE FILTERS fall into Class H10. These filters feature a wooden or galvanised sheet-steel frame, with a flange for the insertion of the counterframe and the filtering media (made of fire-retardant, anti-bacterial, water-repellent micro-fibreglass), as well as aluminium separators with bent-back edges to make the structure crushproof and to protect the filtering paper. The perfect seal is guaranteed by the use of synthetic sealants.
The category of high-efficiency absolute filters in Classes H13-H14 includes our DEEP-PLEAT ABSOLUTE FILTERS, manufactured and tested in accordance with the EN 1822 European standards. Every filter features a label that shows the identification code, the serial number and the functional data; the label also serves as a test certificate. These filters are used in air-treatment systems where there is a requirement for a high level of sterilisation, for the treatment of air in the electronics, pharmaceutical and photographic industries, and to control the atmosphere in hospitals, laboratories and clean rooms.
Our HIGH-EFFICIENCY ABSOLUTE BAG FILTERS feature small bags that create a series of adjoining “pockets”, allowing for the highest ratio of filtering surface to volume. These filters can have up to 100% air flow and ensure high volumes of filtration with low load loss. They all feature a special, single-piece seal. Constructed using a wooden or galvanised steel frame, the filtering media is micro-fibreglass, with separators made of thermoplastic material. These filters are used mainly in hospitals and analytical laboratories.
Our LAMINAR FLOW ABSOLUTE FILTERS have a frontal flow speed of 0.45 m/s. The filtering media is water-repellent micro-fibreglass, with small pleats featuring separators made of continuous thermoplastic wire. The frame is made of profiled aluminium, and features a closed-cell neoprene seal on the air inlet side. The special shape makes it possible, when working at capacity, to achieve laminar air flows that are suitable for clean rooms, where there are stringent requirements in terms of the absence of turbulence, and in the food sector.