3M Filtration / Cuno

The asymmetric pore structure of 3M™ MicroPES™ Flat Sheet Membrane delivers high-throughput performance across a wide range of applications, thanks to the variety of pore sizes available. The evenly distributed pores form an asymmetrical structure along the thickness of the membrane, resulting in pronounced depth filtration characteristics. 3M™ MicroPES™ Flat Sheet Membrane is used in various applications requiring high retention. It can be processed using standard pleating and welding techniques and is also available in a wide variety of pore sizes to meet the needs of various specific applications. Chemically enhanced backwashing with chemical cleaners, such as hydrochloric acid, citric acid, acetic acid, sodium hydroxide or sodium hypochlorite, does not affect the mechanical stability of the membrane. 3M™ MicroPES™ Flat Sheet Membrane offers proven throughput performance due to its asymmetric pore structure.

The pore structure of 3M™ MacroPES™ Flat Sheet Membranes, combined with their relatively open surface, is responsible for their high filtration performance and low tendency to block. Due to the slightly asymmetrical distribution of the pores, the retention layer is protected within the cross-section, whilst the surface, with its open pore structure, ensures high filtration performance. The material used is characterised by excellent wetting properties due to its polar surface. MacroPES Flat Sheet Membranes possess good thermal welding properties for applications in various industries.

The 3M™ 740 Series filter cartridges are pleated polypropylene microfibre depth filters. They are suitable for filter housings designed to accommodate large filters with an outer diameter of 16.51 cm, a length of 101.6 cm and a 226 O-ring connection. Use the 3M™ Series 740 filter cartridges for highly efficient external-to-internal liquid filtration. In applications with high contaminant removal requirements, our filter cartridges allow higher flow rates than standard 6.35 cm diameter products. This means that significantly fewer filter cartridges are required for a given flow rate. The filter medium used in the 3M Series 740 filter cartridges is based on 3M polypropylene microfibre. Our manufacturing processes enable production to strictly controlled specifications. The result is a filter medium with consistent and predictable particle retention properties. The microfibre medium is radially pleated (a 3M innovation) – this optimises the usable filter area of the cartridges. End caps, outer sleeves and cores made of polypropylene in the 3M Series 740 filter cartridges protect the pleated media and result in a robust filter construction. A double O-ring seal reduces the risk of fluid bypassing the filter. 3M Series 740 filter cartridges are available for particle sizes ranging from 1 µm to 70 µm (with a particle retention efficiency of 99.9%).

The 3M™ Zeta Plus™ BC Series Filter Capsule with DEL Series Media features hydrophobic and lipid-specific adsorbents, and is used in a range of pharmaceutical and biological applications. Reduce lipids and lipoprotein haze with the 3M™ Zeta Plus™ BC Series Filter Capsule with DEL Series Media. This can lead to improved processing efficiency (extended column and membrane life), improved product purity and enhanced stability of the final protein product. Our capsule is scalable and can be used in applications ranging from small laboratory volumes to production-scale operations. The Zeta Plus™ BC Series Filter Capsule with DEL Series Media is manufactured in accordance with the specifications described in our Drug Master File on file with the FDA. Certificates of Quality are issued with every filter. Combined with the larger-scale capsules, the 3M Zeta Plus Encapsulated System offers a fully single-use depth filter solution for processing volumes ranging from 100 ml to 25,000 L of liquid.

3M™ ZP Series housings can be manufactured to a wide range of material and design standards. Our housings accommodate up to four stacked 3M™ Zeta Plus and 3M™ Zeta Carbon filter modules with diameters of 8”, 12” and 16”. For most pharmaceutical (biotech and high-purity chemical) applications and for other processes requiring the use of special materials and high surface finishes, use the 3M™ ZP Series housings. Custom designs The 3M SPSD Hardware Team for Western Europe has extensive expertise in the design of special housings for modular filters. The ZP Series housings can be manufactured to numerous different design and construction standards (including ASME U Stamp). The 3M ZP vessel range extends from simple modifications to existing designs through to large, rack-mounted units with multiple housings and matching accessories. Heating jackets and electric trace heating can also be provided. Examples of applications include both biotechnological and high-purity chemical processes. Multi-column configurations are also available. The information in the following sections relates to these housings – for detailed information, please contact your local 3M SPSD representative. Operating conditions The 3M ZP vessels have a typical design pressure of 10 bar g and can be used at temperatures up to 150 °C (for sterilisation). The actual operating temperatures depend on the type of filter cartridge and the requirements of the Pressure Equipment Directive 2014/68/EU applicable to pressure vessels. Construction materials Specialised vessels for lens-shaped filter elements are available in a wide range of materials, including 316L stainless steel and low-ferrite stainless steels (<1% and <3%), as well as Hastelloy C22 and super duplex grades. Seals Silicone seals are standard. Other sealing materials are available and can be installed without difficulty. Inlet and outlet connections Numerous options are available, such as clamp and flange connections or threaded connections. Surface finish We can polish the surfaces both mechanically and electrically. Surface quality Ra < 0.8 µm or lower. We also typically supply spray balls for certified cleaning using riboflavin. Food compatibility All 3M ZP enclosures can be manufactured in accordance with the requirements of Regulation (EC) No 1935/2004 on materials and articles intended to come into contact with food. PFCR 2014/68/EU 3M ZP enclosures are routinely produced for categories up to and including PFCR Cat IV. ATEX 2014/34/EU All 3M ZP enclosures can be manufactured in compliance with ATEX Condition II 2 GD IIC.

3M™ Zeta Plus™ HN Series filter sheets are made from high-quality cellulose and inorganic, resin-bonded filter aids. Our robust filter sheets support reliable processes thanks to their excellent mechanical strength. 3M™ Zeta Plus™ HN Series filter sheets are available in several grades to meet different requirements for wine filtration. Our filter sheets withstand multiple steam/hot water sanitisation cycles and are suitable for higher operating temperatures. They are characterised by high filtration efficiency and high filtration capacity to protect final filters. The benefits include longer filter service life and lower costs.

The 3M™ Betapure™ NT-T Series filter cartridge is our filter cartridge featuring a polypropylene filter medium with pore sizes ranging from 0.5 to 70 microns and lengths from 25 cm to 1 m. The 3M filter cartridge design combines a polypropylene filter medium with a multi-layer flow distribution network, whose flow channels are specifically arranged to facilitate flow from layer to layer. With the 3M™ Betapure™ NT-T Series filter cartridge, you combine consistent filtration performance with a long service life. These high-performance and durable filter cartridges also deliver direct cost savings, as fewer filters are required. And thanks to the longer replacement intervals, you also save immediately on labour and disposal costs. This is achieved through an innovative cartridge design featuring a flow-promoting filter medium that distributes the liquid flow and contaminants uniformly throughout the entire depth of the cartridge. The result is a filter with a precisely rated retention rate and a long service life for cost-effective filtration. The 3M Betapure NT-T series filter cartridge is available in pore sizes from 0.5 to 70 µm and lengths from 25 cm to 1 m. It comprises three media sections, each consisting of several media/distribution layers. The polypropylene media offers broad chemical and thermal compatibility. A key feature of the filter design used by 3M for the 3M Betapure NT-T series filters is the high consistency of the filtration performance. Not only do the 3M Betapure NT-T series filters achieve exceptionally long service life, they also deliver predictable results throughout the filter’s entire service life. The construction of the filter media, distribution mesh, core and end caps, made from 100% polypropylene, ensures broad chemical and thermal compatibility without any linting. The materials used are compatible with FDA CFR-21. Applications: Chemical and hydrocarbon processing Acids Bleaching (sodium hypochlorite) Production of polyethylene and polypropylene Production of high-purity chemical compounds Food and beverages: Removal of particles and turbidity during water bottling Protection of membranes and spray nozzles in reverse osmosis Separation of diatomaceous earth or activated carbon and beverage blending Rinsing and washing water Fine chemicals and electronics: Reverse osmosis pre-filtration of incoming water with a high colloid index Copper sulphate electroplating bath filtration in printed circuit board manufacturing and colour screen filtration in cathode ray tube production Coatings: Film and paper coatings, photographic film Lens coatings and barrel coatings High-quality paints and inks Industry: Machine tool lubrication Chemicals, cleaning agents and wastewater Textiles, coating baths, pulp and paper Process water and groundwater remediation

The 3M™ Zeta Plus™ BC Series Filter Capsule with SP Series Media is our convenient scaling tool for evaluating media selection and system sizing for a Zeta Plus purification system. Designed for applications in biological and pharmaceutical filtration, the 3M™ Zeta Plus™ BC Series Filter Capsule with SP Series Media comprises a mixture of high-surface-area inorganic filter aids, cellulose and a positively charged cross-linking polymer. Our BC25 laboratory capsule is used to optimise and design the filtration performance of a purification process by effectively screening the full range of available Zeta Plus media options. A scalable range of single-use capsules enables predictable performance at every stage of drug development, from early-stage discovery to commercial production. This pharmaceutical-grade product is backed by quality control testing.

The 3M™ CUNO™ CTG-Klean System filter package with MicroKlean™ RT Series filter cartridge forms a closed system comprising a separate pressure vessel and a disposable filter unit, designed to isolate the product being filtered from the housing. With the 3M™ CUNO™ CTG-Klean System filter pack with MicroKlean™ RT Series filter cartridge, you reduce the workload and the user’s exposure to contaminants and cleaning solutions compared to filter changes and cleaning with conventional housings. Advanced depth filtration The advantages of our rigid filter construction are consistent performance and long service life. A consistent filtration result throughout the entire service life of a depth filter depends on how well the filter structure can cope with changing operating conditions – including contaminant load and differential pressure. Flexible structures, such as soft, melt-blown and spun-bonded filters, tend to change their density and porosity under increasing pressure. Rigid structures like ours do not. Compaction of the media can shorten the filter’s service life, as the pores collapse and eventually close completely. Compaction can also cause the filter to release particles that have already been trapped. Solution The 3M™ Micro-Klean™ RT Series captures contaminants and retains them within its rigid filter matrix, even under increasing differential pressure. In addition, the cartridge’s depth filter structure offers significantly higher contaminant holding capacity and flow capacity at a given pressure. Unlike soft melt-blown and spun-bonded filters, which require a support core, our filter cartridge is self-supporting. Its corrugation provides more than twice the surface area compared to non-corrugated cartridges. The increased surface area prevents early clogging of the outer surface by large particles and gels and supports full utilisation of the depth matrix – for a significantly longer filter service life. Result: The longer service life of the filter cartridge results in fewer filter changes, whilst the improved flow characteristics typically mean that fewer filters are required for a given flow rate. Together, these factors can lead to significantly lower filtration costs. Flow optimisation The cartridge unit reduces the effort and time required for filter changes and cleaning, as is common with conventional housings, thereby minimising the user’s exposure to contaminants and cleaning solutions. The fully optimised system, featuring high-performance and long-lasting filters, makes the 3M™ CUNO™ CTG-Klean System filter package with MicroKlean™ RT series filter cartridges the first choice for user-friendly and cost-effective filtration.

Micro-Klean™ RT Series filters are depth filter cartridges made entirely of polypropylene. They offer consistent particle removal rates, increased filter surface area for longer service life, lower pressure drops and significant particle reduction. The long service life of the filters means fewer filter changes are required. This product is suitable for a wide range of applications, including food and beverage production. The filter’s robust construction ensures consistent performance, a longer service life and fewer filter changes. We manufacture the Micro Klean™ RT Series filters using our proprietary rigid extrusion-bonding technology. Our unique manufacturing process combines superior process control with quality assurance, enabled by an ISO 9001-certified quality system, to ensure reliable product performance. This exclusive manufacturing process utilises a high degree of thermal bonding between fibres, without the use of binders, to create a rigid, core-free filter structure with the following properties: Does not release contaminants as differential pressure increases, unlike typical melt-blown filters Allows grooves to be incorporated into the upstream surface without the filter structure tearing or melting, thereby more than doubling the effective surface area Demonstrates an exceptionally low differential pressure for a given filter performance. The core-free filter structure allows for easy disposal by incineration or shredding A continuous filter element of integral length is easy to install and has no joints that could break Consistent filtration throughout the service life of a depth filter depends on how well the filter structure tolerates fluctuations in operating conditions – including contaminant load and differential pressure. Flexible structures, such as melt-blown and filament-wound filters, tend to compress under increased pressure and alter their porosity, whereas rigid structures such as ours do not. Media compression can lead to a short filter service life, as the pores collapse and eventually close. Media compression can also cause the filter to release particles that have already been captured. Our robust Micro Klean RT series filters capture contaminants within their rigid filter matrix and retain them, even as differential pressure rises. Furthermore, the unique depth filter structure of the Micro Klean RT filter series significantly increases dirt-holding capacity and offers greater flow capacity at a given pressure. Unlike soft melt-blown and spun-bonded filters, which require a core support, our Micro Klean RT series filter is self-supporting and grooved to provide more than twice the surface area. The increased surface area prevents premature clogging of the outer surface by large particles and gels and promotes fuller utilisation of the filter’s capacity. The result is a significantly longer service life than that of competitors’ filter cartridges. The extended service life of the Micro Klean RT series filters leads to fewer filter changes, whilst the improved flow characteristics typically reduce the number of filters required to achieve a specific flow rate. These combined features can significantly reduce overall filtration costs.

In today’s electronics manufacturing and chemical processing industries, ever-increasing demands are being placed on filtration efficiency and the purity of the filtrate. Our Betafine™ filter cartridges in the PEG series offer solutions for a wide range of applications. This pleated filter cartridge, made from 100% polypropylene, features absolute filtration, graded porosity and Advanced Pleat Technology (APT), which increases the effective surface area and service life. Betafine filter cartridges in the PEG series effectively reduce contaminating particles whilst maintaining or increasing process yield. These filter cartridges represent a major advance in pleated filter technology and performance, building on our history of innovation in filter design. This pleated filter cartridge, made from 100% polypropylene, features absolute filtration, graded porosity and highly efficient Advanced Pleat Technology (APT), which increases the effective filtration area whilst maintaining standard filter cartridge dimensions. The result is a filter cartridge with consistent performance and a long service life. The ABCs of APT design We have developed our innovative Advanced Pleat Technology (APT) to extend the service life of every Betafine™ filter cartridge in the PEG series. This design maximises the filter’s usable surface area and maintains open flow paths between the media pleats. The design also supports a media structure with multi-stage porosity, resulting in lower pressure drops, longer service life and lower overall filtration costs. These filters are manufactured using our staggered pleat configuration, which, in combination with a novel support material, provides greater open space between the pleats. The staggered pleats with an enlarged open area allow for greater contaminant capture between each pleat at the inner diameter. At the same time, the shorter pleats utilise the open area closer to the outer diameter. The result is a fully utilised surface area that enables a long service life. Applications Electronics manufacturing Water filtration prior to reverse osmosis Electroplating and cleaning baths Complex multi-layer printed circuit board processes Production of fine chemicals Clarification of high-purity chemicals Organic and inorganic chemical intermediates Various acids and bases Solvents and polymer solutions Multi-stage porosity — the key to a longer service life The multi-stage porosity of the media structure in Betafine™ filter cartridges of the PEG series reduces particles sequentially by size — with larger particles passing through the more open, outer media and smaller particles through the denser, inner media. The outer media acts as a pre-filter, whilst the inner media ensures the absolute removal specified by the filter cartridge performance. Our unique design effectively distributes contaminants throughout the depth of the filter media, resulting in high holding capacity with low pressure drop. This gives our filters a longer service life compared to competing filters. Chemical Compatibility The manufacture of fine chemicals requires cost-effective, robust filter cartridges with a long service life. Our durable polypropylene construction offers broad chemical and mechanical compatibility for many demanding process fluid applications. Compatibility is influenced by operating conditions; for critical applications, the filter cartridges should be tested under real-world conditions to ensure the correct selection. We have specifically developed, manufactured and quality-tested the Betafine™ PEG series filter cartridges to meet the requirements of the electronics and fine chemicals industries. The larger surface area of our exclusive APT design, our multi-layer media structure, multi-stage porosity and broad chemical compatibility ensure the effective filtration you need, whilst simultaneously reducing filtration operating costs.

The 3M™ Betapure™ AU Series filter cartridges feature a rigid filter structure that achieves a very long service life in a wide range of applications. They are available in various filter grades with absolute retention rates. The controlled pore size of the filter matrix allows for a clear distinction between filter grades, thereby ensuring precise and consistent filtration. Use the 3M™ Betapure™ AU Series filter cartridge for precise contaminant reduction, consistent filtrate quality and excellent service life in a wide range of applications. Numerous filter grades are available, with particle size-defined separation. This allows you to precisely define the filter properties and optimally tailor the filtration process to your needs in a cost-effective manner. Using state-of-the-art manufacturing processes, Betapure AU Series filter cartridges are given a clean and rigid filter structure, ensuring reproducible and consistent filtration results. The filter matrix consists of long bicomponent fibres, each with an inner core and an outer sheath. Betapure AU Series filters are available in two bicomponent fibre combinations – polypropylene/polyethylene or polyester/copolyester. This ensures maximum compatibility with your process. The 3M Betapure AU Series Z11 and Z13 filters feature a polypropylene or glass paper insert respectively. The manufacture of 3M Betapure AU Series filters involves strict material quality assurance, extensive in-process quality controls and detailed testing and inspection of the end product. This results in a product that has the same filtration properties batch after batch, filter after filter. The two-component fibres of the filter matrix are thermally bonded in a process that utilises the different melting temperatures of the two fibre components. The matrix is heated to a temperature above the melting point of the polyethylene sheath but below that of the polypropylene core. In this process, the fibres are bonded at every point of contact. The resulting fibre structure is so strong that a support core in the filter is not required and fibre washout is also prevented. Applications: Coatings – high-quality paints, film coatings, resins and inks General industry – desalination, coating Electronics – reverse osmosis pre-filtration, suspensions in wafer manufacturing, ceramic slurries, chemical-mechanical polishing, disc cleaning Chemicals/Petrochemicals – process water, reverse osmosis pre-filtration, amines, fine chemicals Advantages of the rigid filter construction Where high demands are placed on filtration quality, absolute retention rates offer you greater product consistency and yield. The rigid filter structure maintains a consistent pore size even under difficult process conditions. Changes caused by pump fluctuations, system shutdowns and restarts, or high differential pressure have, if at all, a minimal effect on product consistency. In depth filtration, even deformable contaminant particles are retained. This means less rework and product waste for you. It is critical for any filtration process that the material to be purified does not bypass the filter. Our solution addresses this with a seal made of closed-cell polyethylene foam to seal the filter cartridge against the matching housing. Lower flow resistance equates to lower filtration costs: a lower pressure drop increases filter service life and product throughput, meaning fewer filters are required for a given flow rate and differential pressure to be overcome. With a filter correctly sized for the application, you reduce the total cost of filtration – including purchase, installation and disposal.

The 3M™ Zeta Plus™ LA Series Filter Cartridge comprises pre-extracted inorganic filter aid, cellulose and a positively charged resin system that attracts negatively charged contaminants from the fluid. Our LA media is available in a range of different surface areas and porosities. For the clarification of bioprocess, biological and pharmaceutical fluids, use the 3M™ Zeta Plus™ LA Series Filter Cartridge. Our LA media features a positive charge to provide greater removal of negatively charged contaminants compared to a mechanical filtration mechanism alone. 3M Zeta Plus LA Series Filter cartridges are manufactured to the specifications described in our Drug Master File on file with the FDA. Certificates of Quality are included with every filter. These filters meet the requirements of USP Class VI Biological Reactivity Tests and meet the strict requirements specified in the Drug Master File, including product control and traceability. This cartridge is available in a range of different surface areas and porosities. A range of housings is also available.

Assembly gasket replacement part for use with 3M™ industrial filter housings. Please contact 3M Separation and Purification Sciences customer service for specific spare part identification.

LifeASSURE™ BLA series filter cartridges are ideal for pre-filtration and clarification in food and beverage applications. Our BLA series pre-filters protect the final filter and extend its service life, minimise the frequency of filter changes and reduce the level of microorganisms downstream of the filter. LifeASSURE™ BLA series filter cartridges deliver high performance either as a final filter for the removal of spoilage organisms or as a pre-filter. In pre-filtration, they effectively extend the service life of LifeASSURE™ BA, BNA and BDA final filters and help to protect other downstream membrane filters. In the manufacture of LifeASSURE™ BLA series filter cartridges, we employ two leading processes: the production of microporous multi-zone membranes and our Advanced Pleat Technology (APT; nominal diameter to pore size) construction. This technology maximises the filter’s usable surface area and maintains the correct flow paths between the media pleats. By utilising a larger effective surface area, LifeASSURE™ BLA series filter cartridges offer low pressure drop and a long service life. Our filters are ideally suited to meet a wide range of filtration and clarification requirements in the beverage industry. Due to their high performance and long service life, LifeASSURE™ BLA series filter cartridges help to reduce associated operating costs. Significant reduction of microorganisms is key For effective filtration and clarification of beverages, the reduction of microorganisms is a crucial outcome expected from cost-effective, reliable filter systems. In tests with Brevundimonas diminuta, the LifeASSURE™ BLA™ 020 series filters demonstrated an average log reduction value (LRV)* of 7.3, whilst the LifeASSURE™ BLA 045 series filters demonstrated an average LRV of 3.5. To meet a wide range of requirements, we offer a range of BLA series filters. When selecting your LifeASSURE™ series filter, please consider the following criteria: The nature of the liquid The particle/colloid content of the liquid The degree of pre-treatment or clarification of the liquid The performance of a downstream membrane filter that is to be protected * LRV = log10 (number of organisms in / number of organisms out) Wine Beer Bottled water Soft drinks Syrups Food-grade colourings and flavourings Preservation solutions Blending and wash water Distilled spirits

The 3M™ CUNO™ CTG-Klean System filter package with Betapure™ AU filter cartridges is a fully enclosed system that uses a separate pressure vessel and disposable filter pack to isolate the product from the housing. Our filter pack reduces the significant time and labour required, as well as the operator’s exposure to contaminants and cleaning agents associated with filter replacement and the cleaning of conventional housings. Get the best in consistent filtration performance with the 3M™ CUNO™ CTG-Klean System filter pack with Betapure™ AU filter cartridges. The 3M CUNO CTG-Klean System was designed with versatility in mind to accommodate a variety of filter media and offers compatibility with a range of liquids to meet numerous process requirements. Our 3M™ Betapure™ AU series filter cartridges are state-of-the-art, rigid, bicomponent fibre depth filters, available in absolute filter ratings from 2 to 190 microns and manufactured using the latest fibre technology. The bonded, rigid structure is non-deformable to withstand high differential pressure and fibre loss in every batch, minimise media migration and ensure absolute filter fineness. 3M Betapure AU Series Filter Applications Coatings High-quality paint Film coatings Resins and ink General Industry Desalination Electroplating Coolants for machine tools Process water Electronics Pre-reverse osmosis filtration Wafer slurries Ceramic slurries Chemical-mechanical polishing Cathode ray tube manufacturing Disc cleaning Chemicals/Petrochemicals Process water Filtration prior to reverse osmosis Amines Fine chemicals The advantage of the rigid construction To meet the demanding filtration quality standards of today’s market, absolute filter fineness ensures product consistency and improved yields. The rigid filter structure ensures consistent pore size even under difficult process conditions. Changes caused by pump fluctuations, system shutdowns and restarts, or high differential pressure have, if any, only a minimal impact on the consistent performance of the resin-bonded 3M Betapure AU Series filter cartridges. Depth filtration reduces deformable contaminants to prevent rework or product quality defects. Lower pressure drops mean a longer filter service life, higher throughput and allow fewer filters to be used to achieve a specific flow-to-differential pressure ratio. When selected in the correct size and filter fineness, 3M Betapure AU-series filter cartridges, when used with the 3M CTG-Klean system, meet your application requirements. Going with the flow The cartridge design of the filter cartridge pack reduces the significant time and labour required for filter changes and cleaning of conventional housings, thereby reducing the operator’s exposure to solvents used for product cleaning. Our optimised system, combined with high-performance, long-lasting filters, makes 3M CUNO™ CTG-Klean systems the first choice for cost-effective filtration.

The 3M™ Betapure™ NT-T Series filter cartridge is our filter cartridge featuring a polypropylene filter medium with pore sizes ranging from 0.5 to 70 microns and lengths from 25 cm to 1 m. The 3M filter cartridge design combines a polypropylene filter medium with a multi-layer flow distribution network, whose flow channels are specifically arranged to facilitate flow from layer to layer. With the 3M™ Betapure™ NT-T Series filter cartridge, you combine consistent filtration performance with a long service life. These high-performance and durable filter cartridges also deliver direct cost savings, as fewer filters are required. And thanks to the longer replacement intervals, you also save immediately on labour and disposal costs. This is achieved through an innovative cartridge design featuring a flow-promoting filter medium that distributes the liquid flow and contaminants uniformly throughout the entire depth of the cartridge. The result is a filter with a precisely rated retention rate and a long service life for cost-effective filtration. The 3M Betapure NT-T series filter cartridge is available in pore sizes from 0.5 to 70 µm and lengths from 25 cm to 1 m. It comprises three media sections, each consisting of several media/distribution layers. The polypropylene media offers broad chemical and thermal compatibility. A key feature of the filter design used by 3M for the 3M Betapure NT-T series filters is the high consistency of the filtration performance. Not only do the 3M Betapure NT-T series filters achieve exceptionally long service life, they also deliver predictable results throughout the filter’s entire service life. The construction of the filter media, distribution mesh, core and end caps, made from 100% polypropylene, ensures broad chemical and thermal compatibility without any linting. The materials used are compatible with FDA CFR-21. Applications: Chemical and hydrocarbon processing Acids Bleaching (sodium hypochlorite) Production of polyethylene and polypropylene Production of high-purity chemical compounds Food and beverages: Removal of particles and turbidity during water bottling Protection of membranes and spray nozzles in reverse osmosis Separation of diatomaceous earth or activated carbon and beverage blending Rinsing and washing water Fine chemicals and electronics: Reverse osmosis pre-filtration of incoming water with a high colloid index Copper sulphate electroplating bath filtration in printed circuit board manufacturing and colour screen filtration in cathode ray tube production Coatings: Film and paper coatings, photographic film Lens coatings and barrel coatings High-quality paints and inks Industry: Machine tool lubrication Chemicals, cleaning agents and wastewater Textiles, coating baths, pulp and paper Process water and groundwater remediation

The 3M™ CUNO™ CTG-Klean System filter package with MicroKlean™ RT Series filter cartridge forms a closed system comprising a separate pressure vessel and a disposable filter unit, designed to isolate the product being filtered from the housing. With the 3M™ CUNO™ CTG-Klean System filter pack with MicroKlean™ RT Series filter cartridge, you reduce the workload and the user’s exposure to contaminants and cleaning solutions compared to filter changes and cleaning with conventional housings. Advanced depth filtration The advantages of our rigid filter construction are consistent performance and long service life. A consistent filtration result throughout the entire service life of a depth filter depends on how well the filter structure can cope with changing operating conditions – including contaminant load and differential pressure. Flexible structures, such as soft, melt-blown and spun-bonded filters, tend to change their density and porosity under increasing pressure. Rigid structures like ours do not. Compaction of the media can shorten the filter’s service life, as the pores collapse and eventually close completely. Compaction can also cause the filter to release particles that have already been trapped. Solution The 3M™ Micro-Klean™ RT Series captures contaminants and retains them within its rigid filter matrix, even under increasing differential pressure. In addition, the cartridge’s depth filter structure offers significantly higher contaminant holding capacity and flow capacity at a given pressure. Unlike soft melt-blown and spun-bonded filters, which require a support core, our filter cartridge is self-supporting. Its corrugation provides more than twice the surface area compared to non-corrugated cartridges. The increased surface area prevents early clogging of the outer surface by large particles and gels and supports full utilisation of the depth matrix – for a significantly longer filter service life. Result: The longer service life of the filter cartridge results in fewer filter changes, whilst the improved flow characteristics typically mean that fewer filters are required for a given flow rate. Together, these factors can lead to significantly lower filtration costs. Flow optimisation The cartridge unit reduces the effort and time required for filter changes and cleaning, as is common with conventional housings, thereby minimising the user’s exposure to contaminants and cleaning solutions. The fully optimised system, featuring high-performance and long-lasting filters, makes the 3M™ CUNO™ CTG-Klean System filter package with MicroKlean™ RT series filter cartridges the first choice for user-friendly and cost-effective filtration.

3M™ LifeASSURE™ PDA Series Filter Cartridges combine two asymmetric polyethersulfone (PES) membrane layers with Advanced Pleat Technology. Our filters are used for the sterilising filtration of biological solutions where low protein binding is critical. Achieve high throughput and fast flow with 3M™ LifeASSURE™ PDA Series Filter Cartridges. Incorporating two layers of polyethersulfone (PES) membrane, the highly asymmetric upstream layer provides prefiltration capacity for the downstream layer, which is also asymmetric. Together, the membrane layers create a gradient membrane pore morphology that provides relatively high contaminant capacity and fast flow rates in a sterilising-grade membrane filter. 3M LifeASSURE PDA Series filter cartridges also feature our innovative Advanced Pleat Technology construction that helps extend service life. This design technology is intended to increase the effective surface area whilst maintaining open flow paths between the media pleats. We manufacture LifeASSURE PDA Series filter cartridges using all-polypropylene structural components (end caps, adapters, media support, inner core and outer cage). We offer LifeASSURE PDA filter cartridges in multiple lengths to meet the dimensional and sealing requirements of most cartridge housings currently available. Engineered for Quality and Reliability Our Quality Management System is certified by an accredited body in accordance with the ISO 9001:2008 and ISO 13485:2003 Quality Management Systems, and the cartridges undergo 100% forward flow integrity testing prior to shipment. We ship all LifeASSURE PDA cartridge and capsule filters with a Certificate of Quality confirming compliance with manufacturing quality specifications. Additionally, supporting Drug Master File (DMF) documentation is on file with the United States Food and Drug Administration (FDA) and a complete LifeASSURE PDA Validation Guide is available upon request. Meeting Your Scale-Up Needs 3M is pleased to offer a full range of LifeASSURE PDA sterilising-grade filters to meet your scale-up process needs. This includes pre-sterilised or sterilisable disposable capsules in various sizes as well as full-size cartridges. We also offer filter discs when even smaller membrane surface areas are required.

3M™ Zeta Plus™ CP Series Filter Sheets are our industry-leading depth filter media, providing optimal clarification of pharmaceutical, bioprocess and biological fluids. Enjoy a high degree of application flexibility with 3M™ Zeta Plus™ CP Series Filter Sheets. Our sheets are designed to provide optimal clarification of pharmaceutical, bioprocess and biological fluids. They can be used for blood plasma fractionation clarification and haze reduction.

Assembly gasket replacement part for use with 3M™ industrial filter housings. Please contact 3M Separation and Purification Sciences customer service for specific spare part identification.