Tangential Flow (Cross Flow) Filtration (TFF)

Tangential Flow Filtration (TFF), also called Cross Flow Filtration (CFF), is a rapid and efficient method for filtration and separation of bioprocessing fluids. In tangential flow system configuration, the particels or containments thar are too large to pass through the membrane pores are retained on the upstream side and are continuously swept away from the surface by the flow stream across the surface. Unlike normal flow filtration (NFF), TFF feature reduces the polarized surface layer build up on the filter membrane which can gradually decrease the flow rate and eventually lead to an unacceptable pressure differential. It can also be operated continuously at relative high loads without fouling. This makes TFF ideal for fine size based separation, such as ultrafiltration/diafiltration (UF/DF) application. TFF is commonly used in separation of proteins from buffer components for buffer exchange, desalting, or concentration prior to final product fill and finish. Important process parameters include retentate flow rate, tranmembrane differential pressure, temperature, and product properties such as concentration, viscosity and contents.

The principle of Normal Flow Filtration (NFF) The principle of Tangential Flow Filtration (TFF)
     

GE Healthcare Crossflow Filtration  

GE cross flow filtration (CFF/TFF) technologies include hollow fiber ultrafiltration cartridges with different molecular weight ratings to support the entire range of ultrafiltration separation applications. CFF systems, such as ÄKTAcrossflow, ÄKTA flux, and UniFlux, are engineered with consistent flow paths for straightforward scale-up or scale-down, easing the transition of biological separations from research to pilot-scale to production. Related products include Microfilration Cartridges, Ultrafiltration Cartridges, Kvick Lab Packet Cassettes, Filtration System Products are Akta Flux, AKTA crossflow, UniFlux. GE also offers a range of accessories for filtration devices and systems, and Spare Parts.

Pall Corporation Tangential Flow Filtration and Systems  

Pall’s line of scalable TFF products range from single-use modules to cleanable cassettes, and from standard lab and benchtop systems to fully customizable process systems. Examples including Allegro™ CM150 Single-Use Tangential Flow Filtration System, Allegro™ Single-Use Tangential Flow Filtration System, Cadence™ Single-use TFF Modules, Cadence™ Single-Pass Tangential Flow Filtration Modules and Systems, Centramate™ 500S Tangential Flow Filtration System, Ultrafiltration and microfiltration membrane cassettes, Cadence In-Line Concentrator , Cadence™ single-pass TFF systems , Cassette Holders, PallSep™ Biotech vibrating membrane filtration systems , Microza* hollow fiber modules, and TFF systems from lab to process scale. Related supporting systems include Minimate™ TFF System, PallSep™ Biotech Systems, Tangential Flow Filtration Systems, and Water Systems.  In addition, GBK Containment Systems systems provide easy-to-use, enhanced containment during filter change-out operations.

Millipore Multi-Use Ultrafiltration System    

Millipore Multi-use Ultrafiltration Systems include Cogent® Process-Scale TFF System that is suited for pilot and production scale tangential flow filtration applications.  The fully automated Cogent® Process Scale System is designed to separate and purify monoclonal antibodies, vaccines, plasma, and therapeutic proteins, suitable for both pilot and production scale applications. The Cogent® M1 system can run in fed-batch or diafiltration mode using an optional transfer pump, which enables the system to process up to 100 liters or more based on product and membrane filter characteristics. The Cogent® μScale tangential flow filtration (TFF) system is an easy-to-use, semi-automated bench top solution that has been designed to fully support TFF process development at the “micro-scale”.  Mobius® FlexReady for TFF provide the flexibility to build an entire downstream single-use process train or incorporate individual unit operations ranging from buffer and media preparation through ultrafiltration/diafiltration.  Pellicon® Cassettes for Ultrafiltration is single-pass TFF (SPTFF) with Pellicon® cassettes allows to eliminate process constraints caused by higher volumes or high concentration factors. ÄKTAcrossflow Filtration System is a fully automated cross flow filtration system for process development and it is suitable for filter screening and process optimization at small-scale as well as small-scale processing.      

 Application Note: Single-pass TFF; Vodcast: Single-Pass Tangential Flow Filtration for Bioprocessing

Flexbiosys Single-Use TFF Systems  

FlexBiosys offers standard and custom single-use tangential flow filtration systems through AlphaBio Inc. The system is based on HF technology and can be modified for other modes of TFF, together with FlexBiosys Inc.’s single-use containers, ARTeSYN™ compact pinch valves, and manifold assemblies, this system provides an compact and optimal disposable purification system.

Sartorius Crossflow Filter, Holders and Systems

Sartorius offer crossflow filtration products Hydrosart® Ultrafilter Cassettes, Polyethersulfone (PES) Ultrafilter Cassettes. Crossflow holders & systems for the use in small scale and production scale. Sartorius Sartoflow® Alpha Plus SU System is equipped with a gamma pre-sterilised loop. All product contacting surface areas like self contained UF or MF unit, pressure domes, flow meters, valves, bags and tubings provide sterility and high process security.

SciLog (Parker Hannifin) TFF systems

SciLog (Parker Hannifin) bioprocess & Pilot Plant filtration systems TFF products include SciPure 200 Automated Single-Use TFF System, SciPure 300 Automated GMP TFF System and SciFlex 150 Semi-Automated TFF System SciPure 200 Automated Single-Use TFF System is single-use bioprocessing platforms for the automation, optimization, and documentation of TFF applications. While SciFlex 150 Semi-Automated TFF System is ideal for pilot level TFF processing and development. In addition, PureTec Tangential Flow Filtration System is a software-driven lab scale TFF protein purification system that automatically monitors and adjusts trans-membrane pressure (TMP) or cross flow rate to optimize product yield: View SciFlex TFF Demo Video 

Novasep Customized industrial TFF systems 

Novasep has the expertise to design, produce and deliver tailor-made TFF systems including equipment, valves, sensors, quality documents and complete software solutions. It offers process development services to design fully adapted TFF systems for clarification, ultrafiltration and diafiltration from pilot- to commercial-scale. Sius™ TFF cassettes is a 100% single-use TFF solution, it is comprised of an automated bench top unit with a fully disposable flow path, capable of lab to pilot scale TFF operations. Learn More >>>>from Brochure: Sius™ TFF Cassettes By Novasep;Poster: Sius™ Cassettes, Product Brochure: Sius™ Cassettes, Product Brochure: Sius™-LS Cassettes

Spectrum Labs Process Filtration Systems   

Spectrum Labs offers products for Filtration Systems , including process filtration, process filtration system and Lab filtration product, and process filtration system components and accessories.  Examples are KR2i TFF System, KMPi TFF System, KTF Automated TFF Systems, KrosFlo Pilot Plus System, and KML 100 TFF system. Details of Spectum labs filtration can be process filtration systems product index.  

Repligen Sius™ Single Use TFF Cassettes

Repligen Spectrum® offer a broad range of hollow fiber filtration technologies for both upstream and downstream applications. They are easy to be scaled up and down, having low protein binding. Spectrum® KrosFlo Tangential Flow Filtration (TFF) systems are turnkey hollow fiber system used in ultrafiltration and microfiltration processes. Custom Pro-Connex® Flow Paths consists of Spectrum® KrosFlo TFF Systems with options of exclusive fittings and connections, uniquely designed TFF process reservoirs, pressure transducers, aseptic connectors, and ll Spectrum TFF filters.

Repligen manufactures two mPES ultrafiltration membranes: ProStream™ and HyStream™. Both are available in TangenX™ SIUS™ Single-use Cassettes and TangenX™ PRO  Reusable Cassettes. TangenX™ Sius™ Single-use TFF Cassettes are complete single-use TFF cassettes and interchangable with TangenX Pro reusable TFF cassettes. When combined with OPUS® Pre-packed Columns, these products support key downstream bioprocessing operations from chromatography to final formulation. Related products include  XCell™ ATF Single-use System for upstream cell culture intensification. Lear More.

High Purity New England (HPNE) WaterSep Gamma Compatible Single-Use TFF Filter

High Purity New England (HPNE) provide Watersep bioseparations filters. Watersep’s high-capacity, anti-fouling UF and MF hollow fiber membanes are available in 3 lines, The ReUse Line, The Green Line and The Steamer Line. The gamma compatible single-use TFF filters provide wide range of MWCO with different size choices, MF/UF/DF capacity, green line, Glycern free, and support high capacity, less fouling and higher product yield.

SciLog (Parker Hannifin) TFF systems

SciLog (Parker Hannifin) bioprocess & Pilot Plant filtration systems TFF products include SciPure 200 Automated Single-Use TFF System, SciPure 300 Automated GMP TFF System and SciFlex 150 Semi-Automated TFF System SciPure 200 Automated Single-Use TFF System is a single-use bioprocessing platform for the automation, optimization, and documentation of TFF applications. SciPure 300 Automated GMP TFF System is a purification platform that automates, documents and optimizes any TFF application needed in a GMP environment. The SciFlex is a single-use bioprocessing platform for the semi-automation, optimization, and documentation of TFF Applications. SciFlex 150 Semi-Automated TFF System is ideal for Pilot level TFF processing and development. In addition, PureTec Tangential Flow Filtration System is a software-driven lab scale TFF protein purification system that automatically monitors and adjusts trans-membrane pressure (TMP) or cross flow rate to optimize product yield: View SciFlex TFF Demo Video 

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