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Dimtech S.A
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Chemisorbant Media

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Purafil Chemisorbant Media shall consist of manufactured, generally spherical, porous pellets. Pellets shall be formed from a combination of activated alumina and other binders, suitably impregnated with potassium permanganate to provide optimum adsorption, absorption and oxidation of a wide variety of gaseous contaminants. The potassium permanganate shall be applied during pellet formation, such that the impregnant is uniformly distributed throughout the pellet volume and is totally available for reaction.
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Purafil, Inc. .... Your Single Source

  • Media Manufacturing
  • Equipment Design & Manufacturing
  • Laboratory Analysis & Testing Services
  • Monitoring Instruments & Programs

The Chemisorptive Process
The Purafil chemisorptive process shall remove contaminant gases by means of adsorption, absorption, and chemical reaction. Gases shall be trapped within the pellet where oxidation changes the gases into harmless solids, eliminating the possibility of desorption.

Removal Capacity
Purafil Chemisorbant Media shall meet the following removal capacities:

  • Hydrogen Sulfide: 8% minimum by weight
  • Sulfur Dioxide: 4.0% minimum by weight
  • Nitric Oxide: 2.8% minimum by weight
  • Formaldehyde: 1.4% minimum by weight
  • For example, 100 pounds (45.36 kg) of Purafil Chemisorbant Media will remove a minimum of 8 pounds (3.6 kg) of hydrogen sulfide.

Physical Properties
Purafil Chemisorbant Media shall have the following physical properties:

  • Moisture Content: 35% Maximum
  • Crush Strength: 35% - 70% •Abrasion: 4.5% Maximum
  • Bulk Density: 50 lbs/ft3 (0.8 g/cc) ±5%
  • Nominal Pellet Diameter: 1/8" (3.175 mm)
  • Potassium Permanganate Content: 4% Min.

Quality Control
Purafit Chemisorbant Media shall be submitted to the following quality control tests before shipment:

  • Moisture Content
  • Crush Strength
  • Abrasion
  • Bulk Density
  • Potassium Permanganate Content

Application Guidelines
Purafil Chemisorbant Media shall perform effectively under the following conditions and guidelines:

  • Temperature: -4° F to 125° F -20°Cto 51° C
  • Humidity: 10-95%RH
  • Airflow: Purafil Chemisorbant Media shall be effective in com mercial and industrial systems with airflows ranging from less than 25 CFM (42.5 mVhr) to over 100,000 CFM (169,920 mVhr) and with velocities from 60 FPM to 500 FPM (1,080 to 9,000 m/hr). Media Performance: Purafil Chemisorbant Media shall be designed for 99.5% min. removal efficiency in Purafil systems. Media Life: Regular media samples of Purafil Chemisorbant Media shall be taken for projecting remaining media life, providing scheduled maintenance, and ensuring performance.