Seitz® AKS4 Activated Carbon Sheets

Immobilized carbon filter media for general purpose carbon adsorption applications

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Why go bulk powdered activated carbon (PAC) when you can go with Seitz AKS4 Activated Carbon Sheets? Developed to satisfy general purpose carbon adsorption applications in the food and beverage industry, the AKS4 Sheets include activated carbon within a cellulosic fibers matrix. Carbon-impregnated media with a homogeneous and consistent matrix means you can eliminate concerns over cleaning the process equipment and time and costs associated with carbon removal. Available in rectangular sheets. Other formats are available on request. 

  • High adsorption efficiency reduces overall processing time
  • Paper layer eliminates the requirement for downstream trap filtration
  • Good permeability with excellent filtrate quality
  • High economic efficiency and long service life

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Seitz® AKS4 Series Depth Filter Sheets, AKS 4 m. SB 400x400

Product ID: B05019
Unit of Measure
Min Order Qty
Filter Media
Activated carbon Kieselguhr and CelluloseF ibers
Filter Area (Imperial)
1.73 ft²
Filter Area (Metric)
0.16 m²
Hot Water Sanitization
90 °C
Size (Imperial)
15.8 x 15.8 in
Size (Metric)
400 x 400 mm
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  • Seitz AKS4 Series Depth Filter Sheets

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Instructions for Use

  • Seitz Sheets: Instructions

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  • Correction of off-color, flavor and odors in distilled spirits
  • Decolorization of sweetener and sugar syrups
  • Color correction in juice and beer applications
  • Gelatin decolorization and deodorization


Food Contact Compliance

  • Please refer to the Pall website for a Declaration of Compliance to specific National Legislation and/or Regional Regulatory requirements for food contact use.


Main Constituents

  • Cellulose, powdered activated carbon, diatomaceous earth (DE, Kieselguhr)


Adsorption Capability

At an optimized flow rate, the probability of contact between the impurities and carbon particles is greater in carbon-impregnated sheets. This is due to process fluids more efficiently contacting carbon particles immobilized into a sheet matrix. Because of the sheet's depth (thickness), it is possible to consider the structure as being made up of a series of layers containing PAC. Having a depth of PAC and passing the fluid at an optimal flow rate through that depth enables maximum utilization of the carbon. Macro- and mesopores can generally be regarded as the highways into the carbon particle and are crucial for adsorption kinetics. Macropores are used for transport, and adsorption occurs in the meso- and micropores. Small molecules, such as methylene blue, which has a molecular weight of 319.86 Dalton, are mainly captured in micropores. Typically, over 20 g/m2 methylene blue is adsorbed.



Sheet with
Protection Paper
Mass per Unit Area
Water Permeability1 l/m2/min (gal/ft2/min)
No 1050 3.8 13 291 (7.2)
Yes 1050 3.8 13 100 (2.5)

These figures have been determined in accordance with in-house test methods and the methods of the Technical / Analytical Work Group within the European Depth Filtration Association.



Depending upon the application and the adsorbed contaminants' nature, AKS series filter sheets may be regenerated by rinsing with clean water in the forward direction. However, the achievable regeneration efficiency must be determined by monitoring filtrate quality.

Sterilization and Sanitization

Method Temperature °C (°F) Maximum Differential Pressure Bar (psi) Time2 Cycle
Steam 125 (257) 0.5 (7.2) 20
Hot Water 90 (194) 1 (14.5) 30

1The permeability was measured under test conditions with clean water at 20 °C (68 °F) and a Δp of 1 bar (14.5 psi).

2The actual time required may vary as a function of the process conditions.