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
IW Tremont Co Inc LabExact Hydrophilic Nylon membrane, NON-STERILE, 0.45 micron, 47mm diameter, pack of 100
LabExact Nylon Membrane is supported with a polyethylene terephthalate (PET) scrim for added support. This scrim is bonded to the nylon using a unique technique with no bonding agent for purity, chemical compatibility and lower extractables. Hydrophilic material eliminates need for wetting agents. Strong protein bonding with high recoveries
Sterlitech Corporation PTFE Unlaminated Membrane Filters, 1.0 micron, 90mm, 10/Pk
PTFE Unlaminated Membrane Filters, 1.0 micron, 90mm, 10/Pk
Alkali Scientific ProCycle™ Pre-cut Sealing Membranes, Non-Sterile, qPCR Optical (pressure-sensitive adhesive) ABI™ Type, 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%.
Sterlitech Corporation Sterlitech Silver Membrane, 5 Micron, 25mm, 50/Pk
SILVER MEMBRANE FILTERS, 5.0 MICRON, 25MM, 50/PK
Sterlitech Corporation EVONIK FLT SH MEMB NF 47MM 5PK
Evonik Flat Sheet Membrane, Puramem Selective, NF, 47mm, 5/pk
Alkali Scientific ProCycle™ Pre-cut Sealing Membranes, Sterile, qPCR Optical (pressure-sensitive adhesive) ABI™ Type, 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%.
Sterlitech Corporation PE FILTR 0.45MCRN,90MM,25/PK
Polyethylene Membrane Filters, 0.45 Micron, 90mm, 25/Pk
Alkali Scientific ProCycle™ Pre-cut Sealing Membranes, Non-Sterile, qPCR Optical (sticky adhesive film) Bio-Rad™ Type, 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%.
Tisch Scientific NYLON MEMBRANE FILTERS
Tisch nylon membrane filters are naturally hydrophilic, have high non-specific binding properties, and an extractable level of <0.0015 mg/cm^2, they are ideal for HPLC solvent and sample preparation.
Tisch Scientific NYLON MEMBRANE FILTERS
Tisch nylon membrane filters are naturally hydrophilic, have high non-specific binding properties, and an extractable level of <0.0015 mg/cm^2, they are ideal for HPLC solvent and sample preparation.
Tisch Scientific Polypropylene Membrane Filters, 0.45um, 25mm, Nonsterile, 200 per pack
Polypropylene Membrane Filters, 0.45um, 25mm, Nonsterile, 200 per pack
Tisch Scientific MCE Membrane Filters
Tisch MCE membrane filters are developed from a mixture of cellulose acetate and cellulose nitrate and are one of the most widely used filters in both air monitoring and analytical applications.