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Donaldson offers a wide range of filters which are suitable for fine and sterile filtration in different industrial applications. By choosing the right filter element and dimensioning, operating costs will be reduced while high product quality will be guaranteed. Especially the food and beverage industry benefits from Donaldson filter elements during the entire process filtration – from pre- to sterile filtration.

	PP-TF Pleated depth polypropylene filter The depth filter PP-TF is suitable for several liquid filtration applications. The PP-TF is a pleated polypropylene filter to remove particles with nominal retention rates from 1 µm to 50 µm. The PP-TF filter element has an exceedingly high dirt hold capacity as well as high flow rate with a low differential pressure.
	(P)- SM N Pleated stainless steel filter for pre- and fine filtration of different liquids The (P)-SM N filter element consists of a regenerable, pleated filter matrix with stainless steel outer guard and end caps. The nominal retention rate extends from 1 μm up to 250 μm. The (P)-SM N filter can withstand a differential pressure of up to 5 bar (flow from outside to inside) and can be used for temperatures up to +150 °C, with welded end caps up to +200 °C and is also suitable for high-viscosity liquids. The element can be regenerated by means of an ultrasonic bath or back-flush.
	(P)-PP Nominal polypropylene depth filter for pre- and fine filtration The (P)-PP is a pleated polypropylene depth filter with an outer guard of polypropylene. The retention rate extends from 0.4 µm to 30 µm. The (P)-PP is characterized by a high dirt hold capacity and high flow rate.
	PP100 C Absolute polypropylene depth filter for retention of Cryptosporidium and Gardia The (P)-PP100 C is a pleated polypropylene pre- and fine filter with an absolute retention rate of 1 µm. The (P)-PP100 C has been approved as an absolute barrier to Cryptosporidium and Gardia, for example in potable and drinking water applications.
	(P)-PF-PES “W” Polyethersulfone membrane for sterile filtration of water and soft drinks The (P)-PF-PES „W“ filter element is an absolute filter with pleated polyethersulfone high performance membrane and is especially developed for sterile filtration and microbial stabilization. The polyethersulfone membrane is inherently hydrophilic and distinguishes itself by having an asymmetrically designed pore structure. The pore size steadily decreases towards the centre of the medium resulting in a highly porous structure. The (P)-PF-PES “W” offers absolute retention rates of 0.2 µm, 0.45 µm and 0.6 µm and with LRV>7 for Brevundimonas diminuta at a retention rate of 0.2 µm. The (P)-PF-PES “W” allows for extremely high flow rates at low pressure. It is fully integrity testable in water.
	PF-PES ”B” Polyethersulfone membrane for sterile filtration of beer and wine The filter PF-PES “B” filter is an absolute filter with pleated polyethersulfone high performance membrane. It has been developed for cold sterilisation of beer and wine. The filter media polyethersulfone is inherently hydrophilic and distinguishes itself by having an asymmetrically designed pore structure. The pore size steadily decreases towards the centre of the medium resulting in a highly porous structure. The filter PF-PES “B” offers absolute retention rates of 0.2 µm and 0.45 µm with LRV>7 for Oenococcus Oeni and Saccharomyces cerevisiae. The filter PF-PES “B” allows for extremely high flow rates at low pressure. It is fully integrity testable in water.
	P-PF-PES “X” Polyethersulfone membrane for cold sterile filtration of beer and wine The PF-PES „X“ filter element is an absolute high performance filter with a pleated polyethersulfone membrane. It provides very high flow rates and a long service lifetime even in liquids with high ingredients like beer and wine. The polyethersulfone membrane is inherently hydrophilic and distinguishes itself by having an asymmetrically designed pore structure. The pore size steadily decreases towards the centre of the medium resulting in a highly porous structure. The PF-PES “X” offers an absolute retention rate of 0.45 µm with LRV>7 for Pediococcus damnosus. The PF-PES “X” allows for extremely high flow rates at low pressure. It is fully integrity testable in water.
	PP-FC Spunbond nominal polypropylene depth filter The PP-FC offers retention rates of 1 µm up to 150 µm and it is characterized by its asymmetrically designed filter matrix. This results in exceptional dirt holding capacity, higher flow capacity with a comparatively lower differential pressure and increased filter life.
	PP-FC 100 Spunbond absolute polypropylene depth filter The PP-FC100 offers retention rates from 0.5 µm up to 20 µm. The element has a high void volume resulting in exceptional dirt-holding capacity and low differential pressure. The filter element meets the requirements for drinking water applications, electrophoretic paint applications and public water supplies.
	(P)-PF-PP Polypropylene membrane filter for aggressive liquids The (P)-PF-PP filter element is a pleated high performance membrane filter made of 100 % polypropylene. It provides the greatest assurance of filtration performance, stability and durability against chemicals even under severe process conditions. Hence the filter is especially suitable for all kinds of filtration for aggressive liquids. The all polypropylene filter medium is hydrophobic with a highly porous membrane structure. This ensures high flow rates and a high absorption of particles during the entire service life time. The (P)-PF-PP filter element offers a cost effective alternative to PTFE membrane filters with similar performance and durability range against chemicals. The filter provides retention rates of 0.2 µm (LRV > 7; Brevundimonas diminuta). It is fully integrity testable per Bubble Point Test or Water Intrusion Test.
	(P)-PF-PT PTFE membrane filter for filtration of aggressive liquids The (P)-PF-PT filter element is a pleated high performance PTFE membrane filter. It provides the greatest assurance of filtration performance, stability and durability against chemicals even under severe process conditions. The filter element is solely made of PTFE and polypropylene and is thermally welded. This results in an integral filter cartridge which provides maximum durability range against chemicals with minimal extractables. The PTFE filter medium is inherently hydrophobic with a highly porous membrane structure. This ensures high flow rates and a high adsorption of particles during the entire service life time. The filter offers retention rates of 0.2 µm (LRV > 7; Brevundimonas diminuta). It is fully integrity testable per Bubble Point Test or Water Intrusion Test.