Stax™ Depth Filters - Seitz® AKS Media product photo Primary L

Stax™ Depth Filters - Seitz® AKS Media

Stax AKS Systems

Combining the high efficiency Seitz AKS media grades with the Stax capsule represents a milestone in minimal handling of activated carbon.

The Stax System Design Provides Simple and Intuitive Operation

Placed into one of the three different sized chassis, Pall’s single-use Stax AKS capsules eliminate the use of stainless steel housings which require costly cleaning and cleaning validation. Stax system chassis are designed for assembly and use by a single operator and provide a logically conceived disposable platform in which the operator can load, operate and unload in an ergonomically designed vertical orientation. With simple, straight forward and familiar features, the Stax platform eliminates the risk of error or mishap and enables greater process success.

Complete Flexibility in Process Design

The Stax platform has been designed to accommodate nearly all processing options. Whether you want to process:
  • Bottom up
  • Top down
  • Bottom in/bottom out
  • In series
Simply using Pall’s uniquely designed manifold kits provides complete flexibility in your process design.

 
Features Benefits
No housing Easier to use and manipulate while eliminating operator safety issues
Completely disposable Eliminates need for cleaning and cleaning validation
Small footprint Enables use in close proximity to other equipment and reduces cost to install
Intuitive design Reduces operator training and time to acceptance
Encapsulated design Reduces operator exposure to potential biohazards
Low hold up volume Greater product recovery and lower post use rinse volume required than traditional modules and housings
 

Seitz AKS Filter Media

Macro- and mesopores can generally be regarded as the highways into the carbon particle, and are crucial for adsorption kinetics. Macropores are used for the transport, and absorption occurs in the meso- and micropores. Small molecules, such as methylene blue, which has a molecular weight of 319.86 daltons, are mainly captured in micropores. For larger impurity molecules, other pore structures in the carbon must be available to ensure optimal adsorption. Carbon, which can capture larger molecules, tends to adsorb smaller impurities as well, whereas dedicated carbons for small molecules do not remove larger contaminants.

The table below provides an overview of how different AKS grades may suit an application based on their general characteristics. However, due to the various factors that may affect the adsorption process, Pall recommends scaled-down testing of several Seitz AKS filter media using Pall UpScaleSM program test kits as the most reliable way. For more information please reference Pall data sheet USD 2459 or validation guide USTR 2491.

Typical Efficiency Characteristics of Pall Seitz AKS Media Grades

 
Media Grade Efficiency Characteristics Typical Molecular weight of Target Contaminants
AKS 1 Ultra high efficiency 400 – 1500 Daltons
AKS 2 Ultra high efficiency 400 – 1000 Daltons
AKS 5 High efficiency 200 – 400 Daltons
AKS 6 High efficiency 400 – 1500 Daltons
AKS 7 Ultra high efficiency 400 – 1500 Daltons
AKS 8 High efficiency 400 – 1000 Daltons
AKS 9 High efficiency 400 – 1000 Daltons
 


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Description

Stax AKS Systems

Combining the high efficiency Seitz AKS media grades with the Stax capsule represents a milestone in minimal handling of activated carbon.

The Stax System Design Provides Simple and Intuitive Operation

Placed into one of the three different sized chassis, Pall’s single-use Stax AKS capsules eliminate the use of stainless steel housings which require costly cleaning and cleaning validation. Stax system chassis are designed for assembly and use by a single operator and provide a logically conceived disposable platform in which the operator can load, operate and unload in an ergonomically designed vertical orientation. With simple, straight forward and familiar features, the Stax platform eliminates the risk of error or mishap and enables greater process success.

Complete Flexibility in Process Design

The Stax platform has been designed to accommodate nearly all processing options. Whether you want to process:
  • Bottom up
  • Top down
  • Bottom in/bottom out
  • In series
Simply using Pall’s uniquely designed manifold kits provides complete flexibility in your process design.

 
Features Benefits
No housing Easier to use and manipulate while eliminating operator safety issues
Completely disposable Eliminates need for cleaning and cleaning validation
Small footprint Enables use in close proximity to other equipment and reduces cost to install
Intuitive design Reduces operator training and time to acceptance
Encapsulated design Reduces operator exposure to potential biohazards
Low hold up volume Greater product recovery and lower post use rinse volume required than traditional modules and housings
 

Seitz AKS Filter Media

Macro- and mesopores can generally be regarded as the highways into the carbon particle, and are crucial for adsorption kinetics. Macropores are used for the transport, and absorption occurs in the meso- and micropores. Small molecules, such as methylene blue, which has a molecular weight of 319.86 daltons, are mainly captured in micropores. For larger impurity molecules, other pore structures in the carbon must be available to ensure optimal adsorption. Carbon, which can capture larger molecules, tends to adsorb smaller impurities as well, whereas dedicated carbons for small molecules do not remove larger contaminants.

The table below provides an overview of how different AKS grades may suit an application based on their general characteristics. However, due to the various factors that may affect the adsorption process, Pall recommends scaled-down testing of several Seitz AKS filter media using Pall UpScaleSM program test kits as the most reliable way. For more information please reference Pall data sheet USD 2459 or validation guide USTR 2491.

Typical Efficiency Characteristics of Pall Seitz AKS Media Grades

 
Media Grade Efficiency Characteristics Typical Molecular weight of Target Contaminants
AKS 1 Ultra high efficiency 400 – 1500 Daltons
AKS 2 Ultra high efficiency 400 – 1000 Daltons
AKS 5 High efficiency 200 – 400 Daltons
AKS 6 High efficiency 400 – 1500 Daltons
AKS 7 Ultra high efficiency 400 – 1500 Daltons
AKS 8 High efficiency 400 – 1000 Daltons
AKS 9 High efficiency 400 – 1000 Daltons
 
Specifications

Stax AKS Capsule Configuration Codes for Different AKS Media Grades

 
Media Grade Media Code Configuration for Stax AKS Amount of PAC Present / Stax Capsule in Kg Media Area / Stax AKS capsule in m²
AKS 1 XAK1 406 1.45 1.40
AKS 2 XAK2 406 1.45 1.40
AKS 5 XAK5 407 1.05 1.62
AKS 6 XAK6 407 1.30 1.62
AKS 7 XAK7 406 1.45 1.40
AKS 8 XAK8 407 1.30 1.62
AKS 9 XAK9 407 1.30 1.62
 

Typical Ash and Endotoxin Level for Different Pall AKS Grades

 
Media Grade Typical Ash Content in % Typical Endotoxin level (in EU/mL
AKS 1 < 3 < 0.12
AKS 2 < 4 < 0.12
AKS 5 < 1 < 0.06
AKS 6 < 3 < 0.06
AKS 7 < 3 < 0.12
AKS 8 < 2 < 0.12
AKS 9 < 2 < 0.12
 

Dimensions and Weight of Stax AKS Large Capsules

  • Capsule Footprint Size: 442 mm (17.4 in.) diameter, 128.8 mm (5.1 in.) height
  • Capsule Weight Dry/Wet (Post Blow Down): 7-7.5 Kg/ < 13 Kg/ <13 Kg

Materials of Construction

  • Media: Cellulose Base and PAC
  • Plastic Components 
       Capsule Shell: Glass filled Polypropylene
        Filter Element: Polypropylene
  • Gaskets: Silicone

Operating Parameters

  • Maximum Operating Temperature: 60 °C
  • Maximum Operating Pressure: 3.5 bar at 25 °C, 1.0 bar at 60 °C
  • Maximum Differential Pressure: 2.5 bar at 25 °C – forward direction

Sanitization

  • Hot Water Sanitization: 80 °C at 1 bar for 1 h
  • Post Use Caustic Treatment: 1 M NaOH at 3.5 bar for 1 h at 25 °C

Traceability

  • Capsule Part Number Laser Engraved with:
       Media batch number
       Internal sales order number
       Unique serial number

Pre-release Testing

  • All capsules 100% leak tested

Stax Chassis Information

Chassis Dimensions

 
Chassis Model Footprint Size
  Height Length Width
SXLSC02 1018 mm (40.0 in) 516 mm (20.3 in) 516 mm (20.3 in)
SXLSC02W 1059 mm (41.7 in) 591 mm (23.2 in) 560 mm (22.0 in)
SXPSC05P 1241 mm (48.9 in) 610 mm (24.0 in) 610 mm (24.0 in)
SXPSC05W 1312 mm (51.6 in) 1150 mm (45.3 in) 800 mm (31.5 in)
SXPSC10P 1864 mm (73.4 in) 610 mm (24.0 in) 610 mm (24.0 in)
SXPSC10W 1935 mm (76.2 in) 1150 mm (45.3 in) 800 mm (31.5 in)
 

Chassis Weights and Capsule Capacity

 
Chassis Model Weight Number of Stax AKS Capsules
    Minimum Maximum
SXLSC02 75 Kg 1 2
SXLSC02W 75 Kg 1 2
SXPSC05P 190 Kg 1 5
SXPSC05W 192 Kg 1 5
SXPSC10P 238 Kg 1 10
SXPSC10W 240 Kg 1 10
 

Chassis Materials of Construction

  • 304/1.4301 Stainless Steel 1.2 μm / 64 μin Ra (typical) Electro-polish

Design Basis

  • Conforms to Pressure Equipment Directive – Category 1 / Module A (SXLSC02 is Sound Engineering Practice)
  • Outside scope of ASME VIII Div 1
  • Complies with Universal Building Code (1997) – Zone 4 / Importance factor 1.25 (SXPSC*P ONLY)

For further information regarding extractables data and certifications for the capsules shells and manifolds please reference the Stax platform validation guide USTR 2528. For extractable data and certification for the Seitz AKS media please reference validation guide USTR 2491.

*Either 05 (indicating a 5 high process scale chassis) or 10 (indicating a 10 high process scale chassis) ATEX Chassis available upon request
Performance

Bring High Performance to New Heights - Stax Systems Video

See the Stax depth filter system in action:
  • Video: Stax Depth Filter Systems (00:04:45)
  • Video: Stax Depth Filter Systems (00:01:31 - abridged version)

Highest Efficiency in Adsorption and Design

Powdered activated carbon (PAC) is widely used in the pharmaceutical industry for decolorization and removal of other trace impurities. The use of bulk PAC has significant drawbacks relating to the handling of bulk carbon powder, cleaning of process equipment, and time (costs) associated with carbon removal from the process. Seitz AKS immobilized carbon media alleviates these concerns by incorporating activated carbon within a matrix of cellulosic fibers. This immobilized carbon media is then coupled with a downstream filter paper to prevent carbon particle shedding downstream of the filter. Additionally, the adsorption efficiency of Seitz AKS immobilized carbon filter media is greater than an equivalent amount of bulk PAC, further reducing overall process time and increasing product yield.

Comparison of PAC and Pall’s Seitz AKS Immobilized Activated Carbon Media

 
PAC Process AKS Process Improvements
Complex multiple steps Streamlined single step
  • Faster process
  • Better yields
  • Reduced labor
Powder addition and mixing Flow through single pass
  • Better adsorption
  • Improved yields
  • Faster process

Carbon powder contamination distributed throughout process plant

  • No upstream carbon
  • No/Trace carbon  downstream of module
  • No cleaning
  • Minimal downstream filtration
Dusty, difficult to handle No dust Improved health  and safety
 

Pall Seitz AKS immobilized activated carbon filter media provides a streamlined process only requiring a single step. The feed stream is simply passed once through the filter at an appropriate flow rate to achieve the desired adsorption. This saves time, resources, and expense. It is nearly 100% free of carbon dust so operators and the workspace are much better protected. No additional mixing, filtration, or cleaning steps are needed.
Ordering Information
This information is a guide to the part number structure and options.

Stax Capsules with Seitz AKS Media

Example Part Number: SXL XAK1  406S P (See bold references in tables below)

Part Number: SXL < Media Grade Code from Table 1 > < Configuration Code from Table 2 > S (Silicone gasket) P (Polypropylene hardware)

Table 1 - Media Grade

 
Code Media Grade
XAK1 AKS 1
XAK2 AKS 2
XAK5 AKS 5
XAK6 AKS 6
XAK7 AKS 7
XAK8 AKS 8
XAK9 AKS 9
 

Table 2 - Configuration for Stax AKS

 
Code Media Grade
406 AKS 1
406 AKS 2
407 AKS 5
407 AKS 6
406 AKS 7
407 AKS 8
407 AKS 9
 

Stax Chassis

Example Part Number: SX PSC05P (See bold reference in tables below)

Part Number: SX  < Code from Table 3 > 

Table 3 - Chassis Scale

 
Code Scale
LSC02 Pilot Scale without castors
LSC02W Pilot Scale with castors
PSC05P 5 high process Scale without castors
PSC05W 5 high process Scale with castors
PSC10P 10 high process Scale without castors
PSC10W 10 high process Scale with castors
 

Stax Manifold Kits

 
Part Number Description
SXBBM400SP (1 1/2") Stax 1½ in. manifold kit, bottom in bottom out
SXBBM400SP (2") Stax 2 in. manifold kit, bottom in bottom out
SXTBM400SP (1 1/2")  Stax 1½ in. manifold kit, bottom in top out
SXTBM400SP (2")

Stax 2 in. manifold kit, bottom in top out

 
Application
Filters - Depth
Segment
Depth Filtration