Seitz® HR Series Depth Filter Sheets

• Seitz HR 100

Fine filtration and reduction of microorganisms in cellulase enzyme solutions

 

• Seitz HR 2000 

Cellulase enzyme clarification and fine filtration

 

• Seitz HR 9000 

Diatomaceous earth (DE) support sheet for cellulase enzyme filtration. Coarse filtration of cellulase enzymes

Nominal Retention¹

¹Measured under laboratory test conditions. Removal performance of filter sheets is nominal and dependent on process conditions. There is no standardized method among manufacturers for its characterization.

 

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

Polyolefin fibers, cellulose, diatomaceous earth (DE, Kieselguhr), and perlite

 

Characterization

Grade	Mass per Unit Area g/m2	Thickness mm	Ash %	Water Permeability2 L/m2/min (gal/ft2/min)
HR 100	1360	3.9	46	51 (1.2)
HR 2000	1220	3.9	45	350 (8.6)
HR 9000	1200	4.8	45	1550 (38.1)

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).

 

Cellulase Resistance

Seitz HR and standard Seitz K series filter sheets were tested for their resistance to cellulase under controlled laboratory conditions. After immersion, the burst force of the samples was measured.

HR sheets exhibit high wet strength when exposed to cellulase enzymes.

 

Sterilization and Sanitization

Method	Temperature °C (°F)	Maximum Differential Pressure bar (psi)	Time3/ Cycle min
Steam	125 (257)	0.5 (7.2)	20
Hot Water	90 (194)	1 (14.5)	30

³The actual time required may vary as a function of the process conditions.