
Choosing a Cassette Holder
Designed for optimum performance and product recovery 颇尔 TFF cassette holders are available in a variety of sizes to meet every application requirement.This way applications that are developed on a small system using a Centramate or Maximate cassette can be easily scaled up, either by adding additional cassettes to the holder or by scaling into a larger cassette format and holder configuration with identical flow path like the Centrasette/Centrastak™ or Maxisette holders.
Holder Sizes
TFF cassette holders for the medium and large-scale production environment have a small footprint, yet still are capable of holding large areas of membrane. All stainless steel holders are engineered to precise specifications with a high standard internal and external surface finish and are available with either manual torque (MT) or auto torque (AT) compression systems for ease of use. Operators must use calibrated torque wrenches (supplied with the holder) to effect required compression of cassettes and gaskets in a manual torque cassette holder.
Auto-torque Feature
Auto-torque cassette holders automatically compensate for cassette compression and temperature reduction.They also eliminate variability in technique between operators.Auto-torque cassette holders are recommended for process-scale validated processes.Sanitary stainless steel holders may be sterilized by steam or autoclaving without cassettes installed.
Fittings Kits
Complete fittings kits consisting of pressure gauges, valves, filtrate manifold, connectors, gaskets and clamps are available for most cassette holders.Ordering a complete fitting kit with the cassette holder simplifies installation into a system and avoids potential delays in starting your process due to missing parts.View additional Tangential Flow Filtration Systems and Components.
TFF Membrane Cassette Holder Information
The following tables list cassette holders with relative area capacities (screen channel cassettes) and working volumes1.
The Minimate™ TFF Capsule is also included to complete the range of lab scale products.
Lab and Development Scale Holders
产品 | Membrane Area (Nominal m2)1 | MembraneArea (Nominal ft2)1 | Working Volume Start2 | Working Volume Final2 |
Minimate TFF 超滤膜包 | 0.005 m2 | 0.05 ft2 | 25 - 500 毫升 | 15 毫升 |
Centramate LV | 0.01 - 0.04 m2 | 0.1 - 0.4 ft2 | 25 - 4,000 毫升 | 15 毫升 |
Centramate PE | 0.01 - 0.37 m2 | 1 - 4 ft2 | 0.5 - 80 L | 150 毫升 |
Centramate | 0.1 - 0.5 m2 | 1 - 5 ft2 | 0.5 - 100 L | 150 毫升 |
Maximate | 0.19 - 1.11 m2 | 2 - 12 ft2 | 1 - 250 L | 350 毫升 |
Pilot Scale (Process Development)
产品 | Membrane Area (Nominal m2)1 | MembraneArea (Nominal ft2)1 | Working Volume Start2 | Working Volume Final2 |
Centrasette LV | 0.46 - 2.0 m2 | 5 - 22 ft2 | 2.5 - 500 L | 400 毫升 |
Centrasette P | 0.46 - 2.0 m2 | 5 - 22 ft2 | 2.5 - 500 L | 400 毫升 |
Centrasette 5 | 0.46 - 4.6 m2 | 5 - 50 ft2 | 2.5 - 1,000 L | 1, 000 mL |
Process Scale (Production)
产品 | Membrane Area (Nominal m2)1 | MembraneArea (Nominal ft2)1 | Working Volume Start2 | Working Volume Final2 |
Centrastak 100 | 0.9 - 20.0 m2 | 10 - 215 ft2 | 10 - 4,000 L | 4 L |
Centrastak 200 | 1.85 - 40.0 m2 | 20 - 430 ft2 | 20 - 8,000 L | 10 L |
Centrastak 300 | 2.8 - 60.0 m2 | 30 - 645 ft2 | 30 - 12,000 L | 15 L |
Centrastak 400 | 3.7 - 80.0 m2 | 40 - 860 ft2 | 40 - 16,000 L | 20 L |
Maxisette 25 | 2.8 - 27.9 m2 | 30 - 300 ft2 | 30 - 6,000 L | 15 L |
Maxisette 50 |
5.6 - 55.8 m2 | 60 - 600 ft2 | 60 - 12,000 L | 30 L |
Maxisette 100 | 5.6 - 92.9 m2 | 60 - 1,000 ft2 | 60 - 20,000 L | 40 L |
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Fewer suspended screen cassettes will fit due to increased thickness.Some holders can fit more membrane area than can be operated at required cross flow rates due to high pressure drops.Do not use more than the recommended area in these holders.Manual (MT) and auto-torque (AT) version holders are available for Pilot and Process Scale applications.
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Working Volumes are based on an average filtrate flux rate of about 50 LMH and process time of 5 hours.Starting Range covers minimum to maximum area installed for screen channel cassettes.Final process volume represents final concentration volume or minimum working volume for the system.Actual volumes depend on system hold-up volume and operating parameters.Piping (tubing) lengths and internal diameters significantly affect the final volume.
Selection of Holders
Centramate LV Holder
The Centramate LV holder is fabricated from Stainless Steel (316L) with female luer fittings for use with 0.01 m2 (0.1 ft2) and 0.02 m2 (0.2 ft2) Centramate cassettes.The holder can accommodate up to 0.04 m2 (0.4 ft2) of screen channel or 0.02 m2 (0.2 ft2) of open channel Centramate cassettes at recommended cross flow rates.A range of luer fittings and valves are available as well as pressure gauges or transducers to set-up a complete TFF system.
Centramate PE Holder
Centramate Stainless Steel Holder
The Centramate stainless steel cassette holder (316L) comes with ½ in. sanitary flanges on feed and filtrate ports. The holder is supplied with surface and weld certification.Up to 5 screen channel (4 suspended screen channel) 0.09 m2 (1 ft2) cassettes can be accommodated.Holder is supplied with both 1 in. and 2 in. spacers on the tie rods to simplify cassette installation and to apply the required torque.Spacers can be removed to compensate for the height difference as additional cassettes are added to the holder.Sanitary fitting kits with either 2 or 3 pressure gauges are available.
Centrasette P Holder
The Centrasette P Holder has a polypropylene center manifold and end plate,for use when product contact with metal is not desirable or prohibited by your application; for example when processing certain metal sensitive enzymes or oligonucleotides.The manifold and end plate are housed between stainless steel plates to supply the necessary rigidity when operating at higher pressures.Luer fittings on the ¾ in. sanitary polypropylene ports can be used for connection to plastic pressure transducers for monitoring pressures, again without metal contact.The low-cost plastic manifold and end plate can be replaced to avoid cleaning validation or dedicated to a specific application along with a set of cassettes to prevent any risk of cross-contamination.The Centrasette P holder like the Centrasette LV holder is intended for use with Centrasette cassettes when total membrane area will be less than 2.5 m2 (27 ft2) of screen channel cassettes or 1.5 m2 (16 ft2) of suspended screen cassettes.
Centrasette LV Holder
The Centrasette LV Holder is manufactured using highly polished 316L stainless steel.This holder has ¾ in. sanitary fractional fitting on the feed/retentate and permeate ports which minimizes the hold-up volume.it is ideal for use in systems that use Centrasette cassettes when total membrane area will be less than 2.5 m2 (27 ft2) of screen channel cassettes or 1.5m2 (16 ft2) of suspended screen cassettes.Centrasette 5 and Centrasette 5AT Holders
The Centrasette 5 holder is intended for use in pilot and process scale applications with up to 5 m2 (54 ft2) screen channel Centrasette or Centrasette II cassettes or 4 m2 (43 ft2) of suspended screen cassettes.The feed/retentate channels have tapered bores engineered to maintain uniform cross flow and pressure drops across the membrane cassettes.Two permeate ports, one near the feed and the other near the retentate, are designed to reduce backpressure on the permeate side of the membrane.This is especially important when operating at high flux rates.Pressure on the permeate side effectively reduces transmembrane pressure and lowers filtrate flux rates.The highly polished 316L stainless steel unit has ports that mate up with 1 in. sanitary connectors.A calibrated torque wrench and socket is supplied with the holder, as it is with other manual torque holders.
Centrastak Holders
Processes developed at bench scale on Centramate and Centrasette cassettes can be scaled up to process volumes in excess of 10,000 L using a Centrastak system.The Centrastak range of cassette holders have been designed for optimal performance in large-scale production environment.The small footprint makes them ideal for use in process skids and manufacturing suites where space is at a premium.Each level in a Centrastak holder can hold up to 10 m2 (107 ft2) of Centrasette cassettes on each side of a central manifold or effectively 20 m2 (215 ft2) per level.A single center-manifold significantly reduces hold-up volumes.Feed flow direction is from bottom to top allowing air to be easily expelled from the system.
All Centrastak holders are available in auto-torque format with a hydraulic system,including stainless steel pistons and pump, Centramate for maintaining optimal and uniform compression on the installed cassettes.A pressurized air supply is required to operate the hydraulic pump (60 psi minimum, 125 psi maximum).All wetted surfaces are electropolished, 316L stainless steel.Holder is supplied with surface and weld certification to support I/Q validation.
Maximate Holders
Maximate holders are designed for use with Maximate membrane cassettes.The 316L stainless steel holder has ¾ in. sanitary feed/retentate ports and ½ in. permeate ports.Up to 6 screen channel cassettes (4 suspended screen channel cassettes), 0.19m2 (2ft2) will fit into the holder accommodating process fluid volumes from a few hundred milliliters up to over a hundred liters.
Maximate cassettes are chosen for scale-up studies when process-scale volumes will be processed using a Maxisette system that has the same feed/retentate channel path length.
Maxisette Holders
The Maxisette holder has been designed for optimal performance in a large-scale production environment.The longer path length of a Maxisette cassette compared with a Centrasette cassette allows a 40 % reduction in cross flow rate (retentate flow rate), therefore requiring a smaller pump with a corresponding reduction in heating, energy costs and space requirements.The small footprint makes it ideal for use in process skids and manufacturing suites where space is at a premium.
Feed flow direction is from bottom to top allowing air to be easily expelled from the system.Port design in the Maxisette cassette results in a significant reduction in pressure drops and a more uniform pressure profile at operating cross flow rates compared to other cassette formats.This results in higher performance during production and more efficient cleaning.
Processes developed at bench scale on Maximate cassettes can be efficiently scaled up to process volumes in excess of 10,000 L. Maxisette holders are available in auto-torque format with a hydraulic system, including six pistons and a pump, for maintaining optimal and uniform compression on the installed cassettes.A pressurized air supply is required to operate the hydraulic pump (60 psi [4.1 bar] minimum, 125 psi [8.6 bar] maximum).All wetted surfaces are electropolished, 316L stainless steel.All Maxisette Holders are supplied with surface and weld certification.
Technical Specifications
Centramate Cassette Holders
Cassette Holder | Centramate LV Holder | Centramate PE Holder | Centramate Holder |
Feed and retentate ports | Female luer SS | ¼ in.NPT Fitting (female) | ½ in. sanitary, 9.6 mm (0.38 in.) bore |
Filtrate ports | Female luer SS | ¼ in.NPT Fitting (female) | ½ in. sanitary, 8.1 mm (0.32 in.) bore |
Maximum membrane area |
- 0.04 m2 (0.4 ft2) 0.02 平方米(0.2 ft2) |
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Nominal dimensions |
12 x 23 6.6 cm (4½ x 9 x 2½ in.) |
9.4 x 24 x 19 cm |
13 x 23 x 16 cm (5¼ x 9 x 6¼ in.) |
重量 | 4 kg (8.75 lbs) | 8.6 kg (19 lbs) | 6.4 kg (14 lbs) |
Maximum operating temperature(2) | 50 °C | 80 °C | 80 °C |
Maximum operating pressure | 5 bar (75 psi) | 6 bar (90 psi) | 6 bar (90 psi) |
Centrasette Cassette Holders
Cassette Holder | Centrasette LV Holder | Centrasette P Holder | Centrasette 5*, 5AT* Holder |
Feed and retentate ports | ¾ in. sanitary SS | ¾ in. sanitary PP | 1 in. sanitary SS |
Filtrate port | ¾ in. sanitary SS | ¾ in. sanitary PP | 1 in. sanitary SS |
Maximum membrane area(1) |
- 2.0 m2 (22 ft2) 1.5 m2 (16 ft2) |
- 2.0 m2 (22 ft2) 1.5 m2 (16 ft2) |
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Nominal dimensions |
26 x 25 x 21 cm (10¼ x 10 x 8½ in.) |
30 x 20 x 34 cm (12 x 8 x 13½ in.) |
26 x 25 x 27 cm (10¼ x 10 x 10¾ in.) |
重量 | 28 kg (62 lbs) | 25 kg (55 lbs) | 30 kg (66 lbs) |
Maximum operating temperature(2) | 80 °C | 50 °C | 80 °C |
Maximum operating pressure | 6 bar (90 psi) | 5 bar (75 psi) | 6 bar (90 psi) |
*Extended tie rods available to increase membrane capacity to 5 m2 (54 ft2) for suspended screen channel cassettes.
Centrastak Cassette Holders
Cassette Holder | Centrastak 100 Holder | Centrastak 200 Holder | Centrastak 300 Holder | Centrastak 400 Holder |
Feed and retentate ports | 2 in. .sanitary | 2 in. .sanitary | 2 in. .sanitary | 2 in. .sanitary |
Filtrate port | 1 in. sanitary | 1 in. sanitary | 1 in. sanitary | 1 in. sanitary |
Maximum membrane area(1) |
- 20 m2 (216 ft2) 15 m2 (161 ft2) |
- 40 m2 (430 ft2) 30 m2 (323 ft2) |
- 60 m2 (645 ft2) 45 m2 (484 ft2) |
- 80 m2 (860 ft2) 60 m2 (645 ft2) |
Nominal dimensions |
39 x 91 x 59 cm (15½ x 36 x 23¼ in.) |
39 x 91 x 59 cm (15½ x 36 x 37½ in.) |
39 x 91 x 107 cm (15½ x 36 x 42 in.) |
39 x 91 x 120 cm (15½ x 36 x 47½ in.) |
重量 | 155 kg (340 lbs) | 255 kg (560 lbs) | 314 kg (690 lbs) | 409 kg (900 lbs) |
Maximum operating temperature(2,3) | 80 °C | 80 °C | 80 °C | 80 °C |
Maximum operating pressure | 6 bar (90 psi) | 6 bar (90 psi) | 6 bar (90 psi) | 6 bar (90 psi) |
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Cassette blocks (2 m2 (21.6 ft2) or 2.5 m2 (26.9 ft2) are recommended.If 0.5 m2 (5.3 ft2) cassettes are used, stabilizer plates must be used between every 5 cassettes (fine/medium screen) or 3 cassettes suspended screen.
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Maximum operating temperature may be restricted by cassette operating temperature limit.
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Holder may be steamed with compatible cassettes, or without cassettes at up to 142 °C.
Maximate and Maxisette Cassette Holders
Cassette Holder | Maximate Holder | Maxisette 25 Holder | Maxisette 50 Holder | Maxisette 100 Holder |
Feed and retentate ports | ¾ in. sanitary | 2 in. sanitary | 2½ in. sanitary | 2½ in. sanitary |
Filtrate port | 1½ in. sanitary | 1½ in. sanitary | 1½ in. sanitary | 1½ in. sanitary |
Maximum membrane area(1) |
- 1.1 m2 (12 ft2) 0.74 m2 (8 ft2) |
- 28 m2 (300 ft2) 28 m2 (300 ft2) |
- 56 m2 (600 ft2) 56 m2 (600 ft2) |
- 89 m2 (960 ft2) 56 m2 (600 ft2) |
Nominal dimensions |
16 x 44 x 22 cm (6¼ x 17½ x 8¾ in.) |
47 x 105 x 57 cm (18½ x 41½ x 22½ in.) |
47 x 105 x 97 cm (18½ x 41½ x 38 in.) |
47 x 105 x 117 cm (18½ x 41½ x 46 in.) |
重量 | 13.3 kg (29.2 lbs) | 455 kg (1000 lbs) | 566 kg (1245 lbs) | 566 kg (1245 lbs) |
Maximum operating temperature(2,3) | 80 °C | 80 °C | 80 °C | 80 °C |
Maximum operating pressure | 6 bar (87 psi) | 6 bar (87 psi) | 6 bar (87 psi) | 6 bar (87 psi) |
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Cassette blocks (2 m2 (21.6 ft2) or 2.5 m2 (26.9 ft2) are recommended.If 0.5 m2 (5.3 ft2) cassettes are used, stabilizer plates must be used between every 5 cassettes (fine/medium screen) or 3 cassettes suspended screen.
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Maximum operating temperature may be restricted by cassette operating temperature limit.
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Holder may be steamed with compatible cassettes, or without cassettes at up to 142 °C.
Materials of Construction for Wetted Parts
Holder | Centramate PE | Centramate LV | Centramate/Maximate | Centrasette P | Centrasette Maxisette |
GeneDisc板 | UHMW polyethylene | 316L stainless steel | 316L stainless steel | 聚丙烯 | 316L stainless steel |
Flow distribution 歧管 |
UHMW polyethylene | 316L stainless steel | 316L stainless steel | 聚丙烯 | 316L stainless steel |
Other components |
EPDM o-ring on SS threaded luer connector |
EPDM sanitary gaskets |
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View additional Tangential Flow Filtration Systems and Components.
订购须知
The following table lists individual cassette holders as well as holders sold in combination with fittings packages.Additional combinations and a variety of other accessories are available.
描述 | Part Number |
Centramate PE Holder, including torque wrench and socket | FS002K10 |
Centramate PE Holder, including fittings package with 3 pressure gauges | FS013K10 |
Centramate LV Holder, including torque wrench and socket | CM018LV |
Centramate SS Holder, including torque wrench and socket | FS001K10 |
Centramate SS Holder, including torque wrench, fittings package with 3 pressure gauges, 2 diaphragm valves |
FS011K10 |
Centrasette 5 manual torque, including torque wrench and socket | FS001K05 |
Centrasette P Holder, including torque wrench and socket | FS039K05 |
Centrasette LV Holder, including torque wrench and socket | FS044K05 |
Centrasette LV Holder, including torque wrench and socket, fittings package with 3 pressure gauges, 2 diaphragm valves |
FS046K05 |
Centrasette 5 Holder, including torque wrench and socket | FS001K05 |
Centrasette 5 Holder, including torque wrench and socket, fittings package with 3 pressure gauges, 2 diaphragm valves |
FS014K05 |
Centrasette 5AT Holder | FS020K05 |
Centrasette 5AT Holder, including torque wrench and socket, fittings package with 3 pressure gauges, 2 diaphragm valves |
FS022K05 |
Centrastak 100 AT Holder | FS050K05 |
Centrastak 200 AT Holder | FS034K05 |
Centrastak 300 AT Holder | FS036K05 |
Centrastak 400 AT Holder | FS038K05 |
Maximate Holder, including torque wrench and socket | FS001G01 |
Maximate Holder, including torque wrench and socket, fittings package with 3 pressure gauges, 2 diaphragm valves |
FS003G01 |
Maxisette 25 AT Holder | FS009K50 |
Maxisette 50 AT Holder | FS013K50 |
Maxisette 100 AT Holder | FS016K50 |
View additional Tangential Flow Filtration Systems and Components.