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Synder Membrane Filters, PX, PAN, UF, 90mm, 5/pk

$227.93
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1121388
Synder
PX
PAN
90 mm
5
5-7 days

Specifications

UF Flat-Sheet Performance Comparison by Manufacturer:

Veolia | TriSep | Synder | Microdyn Nadir

Veolia

Series GE GH GK PT PW MW
Feed Surface/Chemical Surface/Chemical Surface/Chemical Process/Ultrapure Process/Ultrapure Oil/Water
Type Pre-Treatment, Color Reduction, Purification Pre-Treatment, Color Reduction, Purification Pre-Treatment, Color Reduction, Purification Pre/Post Treatment Pre/Post Treatment Hydrophilic
pH Range (25 °C) 1-11 1-11 1-11 1-11 1-11 2-9
Flux (GFD)/psi 18/400 20/150 17/75 90/50 85/30 176/20
Rejection Size 1K-PEG 2K-PEG 3K-PEG 5K-Dextran 10K-Dextran 50K-Protein
Pore Size/ MWCO 1,000 Da 2,000 Da 3,000 Da 5,000 Da 20,000 Da 50,000 Da
Polymer Composite Polyamide Polyamide-TFC Polyamide-TFC Polyethersulfone Polyethersulfone PAN

Veolia | TriSep | Synder | Microdyn Nadir

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Synder Filtration™

Series VT MT ST SM MK V3 BN MQ MQ MAX V4 BY LY V5 BX LX A6 V6 V7
Feed1 IND IND IND IND/WW IND IND/WW IND IND IND IND/WW IND IND IND/WW IND IND IND IND/WW IND/WW
Type2 AB, Pharma Protein, Enzyme BC BC, DC DC Alkalines Brine, Protein Protein, BC Protein, BC FR CWM, Particle CWM, Particle FR CWM, Particle CWM, Particle AP, Microbial CP Laundry Waste
pH Range3 1-11 1-11 1-11 2-11 1-11 1-11 1-11 1-10 1-13 1-11 1-11 1-11 1-11 1-11 1-11 1-11 1-11 1-11
Flux (GFD)/psi 81-125/60 133-205/60 146-225/60 166-255/60 169-260/60 143-220/60 156-240/60 176-270/60  176-270/60  163-250/60 228-350/60 195-300/60 228-350/60 244-375/60 228-350/60 254-390/60 241-370/60 325-500/60
Rej. Size 3K 5K 10K 20k 30K 30K 50K 50K 50K 70K 100K 100K 200K 250K 300K 500K 500K 800K
Pore size/ MWCO 3,000 Da 5,000 Da 10,000 Da 20,000 Da 30,000 Da 30,000 Da 50,000 Da 50,000 Da 50,000 Da 70,000 Da 100,000 Da 100,000 Da 200,000 Da 250,000 Da 300,000 Da 500,000 Da 500,000 Da 800,000 Da
Polymer PES PES PES PES PES PVDF+ PVDF PES PES PVDF+ PVDF PES PVDF+ PVDF PES PVDF PVDF+ PVDF+

Notes:
1 IND=Industrial; WW=Waste Water
2 AB=Antibiotics; AP=Aniodic Paint; BC=Beverage Clarification; CP=Cathiodic Paint; CWM=Corn Wet Milling; DC=Dairy Clarification; FR=Fouling Resistant
3 Evaluated at 25 °C

 Series LV PX PY PZ
 Feed Industrial Wastewater Wastewater Wastewater
 Type Corn Wet Milling Oil Removal Oil Removal,
Enzyme Processing		 Oil Removal,
Enzyme Processing
 pH Range (25 °C) 2-10 3-10 2-11 3-10
 Flux (GFD)/psi

202-310/60

 244-375/60 192-295/60 179-275/60
 Rejection Size 200K 300K 100K 30K
Pore Size/ MWCO 200,000 Da 300,000 Da 100,000 Da 30,000 Da
Polymer PES PAN PAN PAN

Veolia | TriSep | Synder | Microdyn Nadir

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TriSep™

Series UA60 UF5 UF10 UE50 UB70
Feed Process Process Process Process Dairy/Wastewater
Type "Tight" Protein Concentration (High Solids) Purification, Protein "Open" Industrial Wastewater
pH Range (25 °C) 2-11 2-11 2-11 2-11 2-11
Flux (GFD)/psi 45-80/110 10/30 60/20 240/20 48/3
Rejection Size 80% MgSO4 - 95% Cytochrome-C 90% Dextran -
Pore Size/ MWCO 1,000 Da 5,000 Da 10,000 Da 100,000 Da 0.03 µm
Polymer Polypiperazine-amide Polyethersulfone Polyethersulfone Polyethersulfone Polyvinylidene Fluoride 

Veolia | TriSep | Synder | Microdyn Nadir

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Microdyn Nadir™

  UH004 UP005 UP010 UP020 UH030 UH050 UP150 UC500 UV150
Feed  Environment, metal, textile, paper, food, pharma/biotech, chemical Environment, metal, textile, paper, food, pharma/biotech, chemical Environment, metal, textile, paper, food, pharma/biotech, chemical  Environment, metal, textile, paper, food, pharma/biotech, chemical  Environment, metal, textile, paper, food, pharma/biotech, chemical Environment, metal, textile, paper, food, pharma/biotech, chemical  Environment, metal, textile, paper, food, pharma/biotech, chemical  Environment, metal, paint, paper, pharma/biotech Environment, metal, paint, paper, pharma/biotech
 Type Hydrophilic,
high chemical resistance		 Hydrophilic,
high chemical resistance		 Hydrophilic,
high chemical resistance		 Hydrophilic,
high chemical resistance		 Hydrophilic,
high chemical resistance		 Hydrophilic,
high chemical resistance		 Hydrophilic,
high chemical resistance		 Extremely hydrophilic High stability against oxidizing agents
pH Range (25 °C) 0 to 14 0 to 14 0 to 14 0 to 14 0 to 14 0 to 14 0 to 14 1 to 11 2 to 11
Flux (GFP/psi) 17/58 23.2/58 116/58 163/58 81.2/58 197/58 336/29 203/29 336/29
Rejection Size N/A N/A N/A N/A N/A N/A N/A N/A N/A
Pore Size/ MWCO 4,000 Da 5,000 Da 10,000 Da 20,000 Da 30,000 Da 50,000 Da 150,000 Da 500,000 Da 150,000 Da
Polymer PESH PES PES PES PESH PESH PES RC PVDF
Max Temp © 95 95 95 95 95 95 95 55 95

Veolia | TriSep | Synder | Microdyn Nadir

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Citations

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Product Attachments
document Flat Sheet Membranes Application Reference (252.92 kB)
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Frequently Asked Questions

Yes—flat sheet membranes can be cut to fit your stirred cell. For best results, use the stirred cell support disk as a template to trace the correct size, then cut the membrane carefully to match.

Yes, we can supply the flat sheet membranes in the correct disk size for your stirred cell. Please contact us at [email protected] for pricing and availability.

We offer both BN and V3 Ultrafiltration Flat Sheet Membranes from Synder. The BN is composed of a standard polyvinylidene fluoride material (PVDF), while V3 iscomposed of material designated as PVDF+. This membrane has been treated to create a positive surface charge, optimizing it for alkaline cleaner and industrial waste water treatment applications.

Used flat sheet crossflow membranes must be stored wet at all times. If a membrane is allowed to dry out, it can irreversibly lose water permeability and performance.

For storage, place the membrane fully submerged in one of the following solutions:
0.5% formaldehyde solution (helps prevent microbial growth)
1.0% sodium metabisulfite (SMBS) solution -- Replace the SMBS solution monthly to maintain effectiveness

UPDI water (ultrapure deionized water)--Replace the water weekly to reduce contamination and biofouling

Yes, we are able to offer some of the flat sheet membranes as roll stock. Please contact us at [email protected] to inquire about pricing and availability.

Flow characteristics for a spiral element and flat sheet membrane are significantly different and are really only comparable on a qualitative basis. Variability in the membrane manufacturing process, differences in water composition, test procedures, and test equipment, used in a factory, laboratory, or elsewhere, will impact water flux results.

Reference: Understanding Variation of Experimental Flux and Rejection

We do not offer complimentary samples of the flat sheet crossflow membranes. However, most customers find the standard pack quantities to be quite reasonable for initial evaluations. For customers that want to evaluate several different membranes, we do offer custom variety packs. And, in some instances, we may be able to offer custom packs containing smaller sheet quantities. Please contact us to inquire about pricing and availability.

Sterlitech flat sheet crossflow membranes should be stored sealed in the original packaging in a climate-controlled environment, protected from direct light, heat, and temperature extremes. While we recommend using membranes as soon as practical after receipt, most flat sheet membranes can typically be stored for up to one (1) year without affecting performance when stored properly.

Some manufacturers supply their membrane in wet to prevent the membrane from going dry. There is always moisture in these sealed bags and it is not uncommon for some condensation (droplets) to form.
Rinsing the membrane on both sides with a stream of clean water is sufficient to remove the preservative solution. There is no need to pre-condition.
Yes, you need to pre-wet the membranes. The best procedure is to place them in a dry holder and allow them to wet from the inlet side first. It may be best to perform this operation with water or a buffer, then dispose of the first rinse, and introduce the process fluid. This prevents any wetting agents or preservatives from mixing with the process solution.
Yes, you may attempt to reuse flat sheet membranes. However, you may find it difficult to achieve a leak free seal. The cell body o-rings necessarily compress the membrane during installation and the physical action of separating the membrane from the o-rings during removal may cause damage. This damage can impede that ability to achieve a leak free seal when the membrane is reused.
Unfortunately, allowing a previously wetted crossflow membrane to dry usually results in permanent reduction of water permeability. Nevertheless, you can attempt to re-wet the membrane and use it. First, soak the membrane in a 50% alcohol solution for at least 15min (ethanol, methanol, or IPA would be acceptable). Next, install the membrane in the test cell and operate the cell with purified deionized water as though you were pre-conditioning the membrane. After about 30min, the permeate flux should stabilize to whatever rate the membrane is now capable of.
Determining which solution to use to clean a flat sheet membrane depends on the substance it is fouled with. As a general rule, you can use a caustic or oxidant solution for organic fouling and an acidic solution for inorganic causes. Please remember that different membranes polymers have different pH tolerances.
Yes, for flat sheet membranes that will be used with water or aqueous solutions, we recommend that you pre-condition the membranes prior to conducting your separation experiments. Pre-conditioning helps ensure that the membranes perform as expected. Also, pre-conditioning removes preservatives and other residuals from the membranes. Purified deionized water is used to pre-condition the membranes. For all flat sheet membranes except the forward osmosis (FO) membranes, install the membrane in the test cell and apply the purified deionized water feed at the normal operating rate and pressure for the membrane. Allow the system to operate with the purified deionized water feed until the permeate flux stabilizes at an expected value. You can now replace the purified deionized water feed with your feed solution and begin your experiments.
Most membrane manufacturers recommend CFVs of 5 to 35cm/s for their spiral wound membrane elements. The flat sheet membranes can be operated in this range to simulate use in such elements. Additionally, the flat sheet membranes may be operated outside of this range by users that want to examine the relationship between CVF and fouling and membrane performance in their applications.
Cross flow velocity (CFV) is the linear velocity of the feed flow tangential to the membrane surface and is typically reported in m/sec or ft/sec. It is calculated by dividing the volumetric flow rate through the feed channel by the cross-sectional area of the feed channel. Please refer to the CFV article at Tech Tips for more information.
The recommended TMP will depend on the type of flat sheet membrane and on the application. Typically, a reasonable TMP will be the same as that noted for the permeate flux specification of the membrane. The specifications for any of the flat sheet membranes can be easily found on our website by clicking the “application/specification” tab on the product web page and scrolling down as necessary. Please contact us at [email protected] if you need additional assistance.
These membrane sizes are intended for use in the bench-scale crossflow test cells offered by Sterlitech. Please see the list of flat sheet membranes we offer and their dimensions: HP4750 Stirred Cell: 47 mm (1.85") discs, CF016 cell: 58 x 75 mm (2.26 x 2.95") coupons, CF042 cell: 56 x 115 mm (2.20 x 4.53") coupons, Sepa CF cell: 140 x 190 mm (5.51 x 7.48") coupons, CF047 circular cell: 47 mm discs, CF090 circular cell: 90 mm discs

Currently we do not offer cellulose acetate UF flat sheet membranes. However, we do offer a wide variety of hydrophilic flat sheet UF membranes that may be considered as alternatives.

In general, retention of large molecules is not only influence by the molecular weight of the molecule, but also by the shape of the molecule and the physiochemical interactions between the molecule and the membrane. For greatest retention, you should select a UF membrane that has a molecular weight cut-off (MWCO) rating equal to or smaller than the molecular weight of the target molecule.

You may also want to evaluate a UF membrane with a MWCO rating that is one step larger than the target molecule. You may find that this selection offers advantages of lower operating pressure and/or higher permeate flux while still exhibiting acceptable retention of the target molecule.

You can find Sterlitech’s offering of flat sheet UF membranes at https://www.sterlitech.com/ultrafiltration-uf-membrane.html. Please click on the “Application/Specification” tab near the middle of the page, and scroll down as necessary, to review the MWCO ratings.

Both the Microdyne Nadir PES UF membranes and the PESH UF membranes are composed of polyethersulfone and are hydrophilic. The PESH UF membranes have been modified for enhanced hydrophilic properties and, consequently, may be more easily preconditioned and may have better resistance to fouling in some applications.

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As an industry leader focused in unique micro and sub-micron filtration products, our goal is to support our customers by keeping them at the forefront of their industries. We're here to help with any filtration questions you might have so you can transform your ideas into reality, and tackle those big science challenges. Feel free to reach out using the form below, our experts are ready to serve.
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