Seitz® BS Series Depth Filter Sheets product photo Primary L

Seitz® BS Series Depth Filter Sheets

Reliable Beer Filtration

Seitz BS series depth filter sheets were developed to meet the production needs and requirements of the brewing industry.

From the selection and quality control of raw materials to application of the latest production technologies, the BS series filter sheets meet the highest quality standards. The high stability of BS series filter sheets enables long production runs and fulfills the specific requirements of the brewing industry.

BS series filter sheets are available in multiple grades suitable for polishing and microbial reduction applications within breweries.
 
Features Benefits
Homogenous and consistent media, available in multiple grades
  • Suitable for coarse to fine beer filtration applications
  • Proven performance
  • Reliable microbial reduction with tighter grades
Media stability due to high wet strength
  • Easy to remove after use
  • High economic efficiency due to a long service life
A combination of surface, depth and adsorptive filtration
  • High solids retention
  • Very good permeability
  • Excellent filtrate quality
Each individual filter sheet is laser etched with the sheet grade, batch number and production date.
  • Full traceability
 


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Description

Reliable Beer Filtration

Seitz BS series depth filter sheets were developed to meet the production needs and requirements of the brewing industry.

From the selection and quality control of raw materials to application of the latest production technologies, the BS series filter sheets meet the highest quality standards. The high stability of BS series filter sheets enables long production runs and fulfills the specific requirements of the brewing industry.

BS series filter sheets are available in multiple grades suitable for polishing and microbial reduction applications within breweries.
 
Features Benefits
Homogenous and consistent media, available in multiple grades
  • Suitable for coarse to fine beer filtration applications
  • Proven performance
  • Reliable microbial reduction with tighter grades
Media stability due to high wet strength
  • Easy to remove after use
  • High economic efficiency due to a long service life
A combination of surface, depth and adsorptive filtration
  • High solids retention
  • Very good permeability
  • Excellent filtrate quality
Each individual filter sheet is laser etched with the sheet grade, batch number and production date.
  • Full traceability
 
Applications
 
Grade Application
BS 400
BS 600
BS 800
Reduction of yeast and beer spoilage organisms
BS 1000
BS 1600
BS 2000
Polishing filtration of beer
 
Specifications

Food Contact Compliance

  • Food contact compliant filters are available. Please consult the Declarations of Compliance for applicable part numbers at the links below.
  • 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, diatomaceous earth (DE, Kieselguhr), perlite.

Characterization

 
Grade Mass per
Unit Area
g/m2
Thickness
mm
Ash % Water
Permeability2
L/m2/min
(gal/ft2/min)
BS 400 1380 3.9 48 95 (2.3)
BS 600 1360 3.9 48 130 (3.2)
BS 800 1320 3.9 48 175 (4.3)
BS 1000 1300 3.8 48 225 (5.5)
BS 1600 1260 3.8 47 305 (7.5)
BS 2000 1240 3.8 46 410 (10.0)
 
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.

2The permeability was measured under test conditions with clean water at 20 °C (68 °F) and a Δp of 1 bar (14.5 psi).

Regeneration

BS filter sheets may be rinsed with clean water (in the forward or reverse3direction) to increase throughput and to optimize economic efficiency. Optimal regeneration of filter sheets installed in a plate and frame filter may be achieved with serial rinses of warm water followed by hot water. An example protocol is shown below.
  1. Rinse with warm water (60 °C / 140 °F) for 15 minutes
  2. Rinse with hot water (70 – 80 °C / 158 – 176 °F) for 8 – 10 minutes
The rinse flow rate should be equivalent to the filtration flow rate with a back pressure of 0.5 –1 bar (7.2 –14.5 psi).

3 When rinsing in the reverse flow direction, it is critical to control particulate and microbial levels in the rinse water so that the filtrate side of the sheet is not contaminated. Water used for reverse flow flushes should be particle-free and if the filter will not be sterilized prior to re-use the water should be free of microbes. Backwashing should be in a diagonal direction from outlet to inlet in a plate and frame filter.

Sterilization and Sanitization

 
Method Temperature
°C ( °F)
Maximum
Differential
Pressure bar (psi)
Time4/
Cycle
min
Steam 125 (257) 0.5 (7.2) 20
Hot Water 90 (194) 1 (14.5) 30
 
4The actual time required may vary as a function of the process conditions.

Filtration Guidelines5

 
Application Flow Velocity
L/m2/h
(gal/ft2/h)
Maximum
Differential
Pressure bar (psi)
Polishing filtration of beer 150 (3.7) 1.5 (21.8)
Reduction of low
microbial levels in beer
(yeast, spoilage microbes)
150 (3.7) 1.5 (21.8)
Reduction of high
microbial levels in beer
(yeast, spoilage microbes)
100-120 (2.5-3) 1.5 (21.8)
 
5Please contact Pall for recommendations on your specific filtration process as results may vary by product, pre-filtration and filtration conditions.

For additional operating guidelines, including rinsing of sheets prior to use, please refer to instructions provided by Pall.
Performance

Quality

  • Filter sheets produced in a controlled environment
  • Manufactured according to ISO 9001:2008 certified Quality Management System

Relative Retention Rating1



1Effective removal performance of filter sheets is dependent on process conditions.
Type
Sheet Filters and Modules
Use
Adsorption, Clarification, Filtration, Polishing, Prefiltration, Reduction, Removal, Retention, Separation, Stabilization
Ordering Information

Available Sheet Formats

Folded Sheets
  • 1003 x 2016 mm (39.5 in. x 79.3 in.)
  • 1205 x 2420 mm (47.4 in. x 95 in.)

Other formats are available on request. Please contact Pall.

Application
Preclarification, Clarification, Particle Filtration, Fine Filtration