Seitz® K Series Depth Filter Sheets

Grade	Application
EKS, EK 1, EK, KS 50, KS 80	Microorganism reduction and yeast removal in wine, final filtration of juice and juice concentrate, microorganism reduction in sugar syrups and microorganism reduction in enzyme solutions
K 100, K 150, K 200, K 250, K 300	Polishing of wine, prefiltration of juice prior to final membrane filtration and haze removal in apple juice
K 700, K 800, K 900	Wine clarification, particle removal from fruit juice and tea-based drinks, prefiltration of juice concentrate, olive oil polishing, enzyme solution and sweetener clarification

Relative Retention Rating¹

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

 

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)
EKS	1400	3.7	58	29 (0.7)
EK 1	1450	3.8	51	41 (1)
EK	1400	3.8	46	68 (1.7)
KS 50	1350	3.7	46	93 (2.3)
KS 80	1350	3.7	46	113 (2.8)
K 100	1350	3.7	46	146 (3.6)
K 150	1350	3.9	46	185 (4.6)
K 200	1350	3.9	46	213 (5.2)
K 250	1250	4	46	510 (12.5)
K 300	1250	4.2	46	785 (19.3)
K 700	1250	4.1	46	925 (22.8)
K 800	1250	4.1	46	1275 (31.4)
K 900	1200	4.3	46	1700 (41.8)

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 K series filter sheets may be rinsed with clean water (in the forward or reverse direction³) to increase throughput and 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 Sanitation

 

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)
EKS, EK 1, EK, KS 50, KS 80	Fine Filtration	525 (12.9)	1.5 (21.8)
K 100, K 150, K 200, K 250, K 300	Polishing Filtration	850 (20.9)	3 (43.5)
K 700, K 800, K 900	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