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
Ibidi USA ibiSeal 76x114
A self-adhesive cover film for sealing open wells and reservoirs in cell culture and microscopy applications. Convenient sealing of ibidi labware products. Easy to apply – easy to remove. Broad range of applications (e.g., reduction of evaporation, maintenance of sterility, and sample transport)
Sterlitech Corporation Polycarbonate (PCTE) Membrane Filters, 0.05 Micron, 13mm, 100/Pk
Polycarbonate (PCTE) Membrane Filters, 0.05 Micron, 13mm, 100/Pk
EZKEM Memmbrane 25 mm Teflon Gas Diffusion 25 pk
EZkem’s 25mm Teflon Gas Diffusion Membranes are used on gas diffusion modules for chloroform extraction. (25 Pack)
Alkali Scientific ProCycle™ Pre-cut Sealing Membranes, Non-Sterile, Transparent membrane, 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%.
CELLTREAT Scientific Products Glass Fiber Filter Disk, Prefilter, Binder Free, 1.0m, 70mm, Sterile, 50/CS
CELLTREAT Scientific Products Glass Fiber Filter Disk, Prefilter, Binder Free, 1.0¿m, 70mm Diameter. Glass Fiber Filter Disks are an ideal prefilter to prevent clogging when filtering viscous or particulate-laden solutions with CELLTREAT Scientific Products vacuum Filter Systems and Bottle Top Filters. Increase filtration speed by removing larger particles prior to sterilizing filtration. Glass Fiber material. RNase/DNase free and non-pyrogenic. Every case is printed with the lot number for quality traceability. Packaged sterile, individually wrapped, 50/case.
Azzota Corp Microporous Filter, Pvdf, Diameter: 47mm, Pore Size: .45um, 100/Pk
Microporous Filter, PVDF, Diameter: 47mm, Pore Size: .45um, 100/pk
Macherey-Nagel MN Bead Tubes Type B, 50 Pieces
2 mL tubes with 40–400 µm glass beads; for homogenization of Gram-positive and Gram-negative bacteria