Filtration Membrane Discs
Thin, precut membrane rounds for high-throughput, fast filtration of liquid and gas samples. Gridded and non-gridded discs. Various materials including mixed cellulose ester, polycarbonate, PTFE, nylon, and PVDF. For air monitoring/analytical research.
Sizes
Filter membranes are made in a range of diameters, typically designed to fit a specific holder or manifold.
Materials
Filter membrane can be made from cellulose, mixed cellulose esters (MCE), polyvinylidene fluoride (PVDF), polyethersulfone (PES), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), nylon, polycarbonate (PC), polyester, polyethylene terephthalate (PET), and polypropylene (PP). Other membrane materials include aluminum oxide, gelatin, porcelain, and glass.
Pore Size
The size of membrane pores determines which particles will be retained by the filter. A pore size of 0.2 µm is small enough to remove microbes from solutions; a 0.45 µm ore size can remove larger particulates.
Color and Grids
White membrane filters may be plain or marked with square grids (outlined in black) that can help with enumerating particles. Gridded or plain black membrane filters may be helpful when filtering light-colored particulates.
Sterility
Filter membranes may be pre-sterilized or may be sterilized using ethylene oxide, gamma irradiation, or autoclaves. The need for sterility is determined by the application, which are many and varied:
- Light microscopy samples
- Cytology sample preparation
- Electron microscopy samples
- Air quality and other environmental monitoring
- Water analysis and water quality testing
- Microbiology colony counting and quality control
- Chemotaxis
- Sterile preparation of buffers, tissue culture media, microbiological media, and other biological fluids
Azzota Corp Microporous Filter, Pvdf, Diameter: 13mm, Pore Size: .22um, 200/Pk
Microporous Filter, PVDF, Diameter: 13mm, Pore Size: .22um, 200/pk
Grainger Membrane Filter 47 mm 0.45 um PK100
The LabExact Membrane Filter is a 47mm diameter hydrophilic polyethersulfone membrane filter with a 0.45μm pore size. It has low protein binding and is ideal for analytical sample preparation including HPLC. The polyethersulfone membrane is naturally hydrophilic and has low extractables. It has a high flow rate and loading capacity. This makes it useful for filtering aqueous and organic solvents. The 47mm diameter allows it to fit standard filter holders. It is sterile and individually packaged. This filter is an excellent choice for analytical sample preparation and clarification.
Sigma Aldrich Fine Chemicals Biosciences Nylon filter membranes por
Nylon filters are naturally hydrophilic and no wetting agents are used in manufacture.With an extractable level 0.0015Amg/cm2 they are ideal for HPLC solvent and sample preparation. Because of high non-specific binding they are not recommended for protein SOLUTIONons.Compatible with aqueous and most organic solventsAutoclavable unaffected by temperatures up to 180C
Sterlitech Corporation PTFE Laminated Membrane Filters, 0.1 Micron, 47mm, 100/Pk
PTFE Laminated Membrane Filters, 0.1 Micron, 47mm, 100/Pk
Azzota Corp Hollow Cathode Lamp (Hcl) Nickel, 1.5 In. (37mm) Fits: Varian, Analytic Jena, Gbc, Hitachi , Shimadzu , Tja, Thermo Unicam, Thermo Elemental, Buck, Phillips, Leeman Labs, Chemito
Hollow Cathode Lamp (HCL) Nickel, 1.5 in. (37mm) diameter fit in a wide range of instruments:- Varian, Analytic Jena, GBC, Hitachi , Shimadzu , TJA, Thermo Unicam, Thermo Elemental, Buck, Phillips, Leeman Labs, Chemito and many others
Analytical Sales & Services MWCO Micro Spin Filters, 800µL Volume, Pes 10,000 with 2.0ml Receiver Tubes
MWCO Micro Spin Filters, 800µL Volume, PES 10,000, with 2.0mL Receiver Tubes (Non-Sterile)
Hach Company Filter Membrane, EZ-Pak, 0.45 micron, 47 mm, white, gridded, 600/pk (Millipore)
Dispenser provides superior convenience and assures sterility. Unique one press on the lever and a sterile membrane is presented (horizontally and inverted) for efficient and convenient assembly. The EZ Pak membranes come as a band of membranes that easily loads into the dispenser. Packaging materials are wound into the dispenser ensuring a clear operating area and quick change of bands. The membranes are Type HA, which signifies compliance with Standard Methods criteria.
Alkali Scientific ProCycle™ Pre-cut Sealing Membranes, Sterile, for ELISA plates, 10 bags of 10 membranes
RNase, DNase, DNA, and PCR inhibitor free Evaporation rates ≤ 5% Inner packs of 10 membranes PureAmp™ Sealing Membranes are compatible with all standard PCR plates. Membrane options include pierceable aluminum, standard transparent, optically clear sticky adhesive, optically clear pressure-sensitive adhesive, and low-adhesive EZ-peel, all of which are guaranteed to keep evaporation rates below 5%.
Waters Corp Solvent Filter, PTFE, 47 mm, 0.2 µm, Non polar, 100/pk
This PTFE membrane is a good choice for use with aggresive organic solvents
Hach Company Filter, Membrane, Pore Size 0.45 µm, Diameter 25 mm, 100/pk
For use in a wide-range of laboratory applications, these discs are composed of Mixed-Cellulose Esters and are the industry standard for particulate removal, particulate analysis and clarification of fluids. Diameter: 25mm. Pore Size: 0.45um. 100/PK.