Proper sizing of fan and filter beds, as well as maintaining face velocity and sufficient dwell time within the filter bed, ensure effective filtration and containment. Select the 12'X12' Replacement Filter or the 24'x18' XL Filter for Bonsai Flow Hood. Dirty environments can reduce the lifespan. The rated filter life is 3,000 hours or 3-5 years of normal use. These filters rely on particles coming into contact with the fibers and being retained through surface or electrostatic forces. Bonsai HEPAFLOW-12 & Bonsai HEPAFLOW-XL Replacement HEPA Filters. The filtration media of ULPA filters consists of fine-diameter sub-micron glass fibers that are folded into pleats and secured within a frame. HEPA and ULPA filters become more efficient as they become saturated with contaminants, indicating the need for replacement. These filters utilize mechanisms such as inertial impaction, diffusion, interception, and sieving to capture particles of different sizes. HEPA filters can capture 99.97% of particles measuring 0.3 microns or larger, while ULPA filters can achieve an impressive 99.99996% arrestance of 0.12 µm particles. HEPA filters and ULPA filters are essential for capturing air contaminants and particulates in containment and filtration systems. The selection of the appropriate carbon grade is crucial for filter efficiency. This includes general organic compounds, acidic compounds, alkali compounds, ammonia and amine compounds, cyanide compounds, ether compounds, aldehydes, sulfur compounds, and more. For substances that are not effectively adsorbed, specialized impregnated carbon filters chemically trap and neutralize them.Ĭarbon filters are available in different grades, each suitable for the removal of specific compounds. The carbon atoms attract surrounding gas molecules through Van der Waal’s forces, leading to their adsorption on the carbon surface. These filters are made up of solid charcoal that is degraded through high-temperature steam activation, creating a highly porous material with an extensive internal adsorption surface. Activated carbon filters play a vital role in containing and neutralizing harmful fumes and gases in state-of-the-art fume cupboards, laminar flow systems, and biological safety cabinets.
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