Seitz® HS Series Depth Filter Sheets

• Seitz HS 200, Seitz HS 400

Fine filtration of beer for bacteria, yeast reduction and microorganism reduction in enzymes

 

• Seitz HS 800, Seitz HS 1000, HS 2000

For beer clarification and DE trap filtration, polishing filtration of thin broth gelatin, fine filtration of enzymes and clarification of thin broth gelatin

 

• Seitz HS 4000, Seitz HS 6000 

Prefiltration and coarse filtration of beer and clarification of thick broth gelatin and enzymes

 

• HS 9000 

Coarse filtration of enzymes

Relative Retention Rating¹

¹ Effective removal performance of filter sheets is dependent on process conditions.

 

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, diatomaceous earth (DE, Kieselguhr), perlite

 

Characterization

Grade	Mass per Unit Area g/m2	Thickness mm	Ash %	Water Permeability2 L/m2/min (gal/ft2/min)
HS 200	1400	3.8	52	60 (15.8)
HS 400	1450	3.9	49	100 (26.4)
HS 800	1400	3.7	49	150 (39.6)
HS 1000	1350	3.7	48	200 (52.8)
HS 2000	1350	3.8	48	400 (105.6)
HS 4000	1350	3.9	46	550 (224.5)
HS 6000	1350	4.2	46	850 (224.5)
HS 9000	1350	4.2	46	1550 (409.5)

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.

 

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

Seitz HS series filter sheets may be rinsed with clean water (in the forward or reverse direction) 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).

 

³When rinsing in the reverse flow direction, it is critical to control particulate and microbial levels in the rinse water so that the sheet's filtrate side 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

For achieving optimal filtrate quality, the following flow velocities and differential pressures should not be exceeded:

Grade	Description	Flow Velocity L / m2/h (gal/ft2/ h)	Maximum Differential Pressure-bar (psi)
Seitz HS 200, Seitz HS 400	Fine Filtration	525 (12.9)	1.5 (21.8)
Seitz HS 800, Seitz HS 1000, Seitz HS 2000,	Polishing Filtration	850 (20.9)	3 (43.5)
Seitz HS 4000, Seitz HS 6000, Seitz HS 9000	Coarse Filtration	850 (20.9)	3 (43.5)

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.

 

 Quality

• Seitz Filter Sheets are produced in a controlled environment
• Manufactured according to ISO 9001:2015 certified Quality Management System