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
Ace Glass, Inc. Replacement glass filter disc for Ace 5801-53 1/4-28 to #7end fitting adapter.
Replacement glass filter disc for Ace 5801-53 1/4-28 to #7end fitting adapter.
Ace Glass, Inc. 90mm straight tubes with 145-174 micron fritted discs, for construction of special apparatus.
90mm straight tubes with 145-174 micron fritted discs, for construction of special apparatus.
Azzota Corp MPF PES 47mm 0.45u S 100pk
Microporous Filter PES Diameter 47mm Pore Size 0 45um 100/pk Sterile
Azzota Corp MPF CN-CA 50mm 0.22u 100pk
Microporous Filter CN-CA Diameter 50mm Pore Size 0 22um 100/pk
Azzota Corp MPF PTFE 47mm 0.80u S 100pk
Microporous Filter PTFE Diameter 47mm Pore Size 0 80um 100/pk Sterile
Azzota Corp MPF CN-CA 47mm 0.80u 100pk St
Microporous Filter CN-CA Diameter 47mm Pore Size 0 80um Sterile 100/pk
Grainger Membrane Filter 47 mm 0.45 um PK1000
The Grainger 14A849 Glass Microfiber Filter, 1.6 μm, 5.5 cm Diameter, Pack of 100 is a pack of 100 glass microfiber filters with a pore size of 1.6 microns and a diameter of 5.5 cm. These high-quality binder-free borosilicate glass filters are designed for a variety of laboratory filtration applications including HPLC sample preparation, IC sample filtration, solvent filtration and air monitoring. Their low metal extractables make them ideal for trace metal analysis. The filters have >98% particle retention down to their rated pore size.
Cole-Parmer Spectra/Mesh 148145 Screen Discs, 47 mm, Nylon, 100 µm, pack of 10
There are four material options to choose from. The nylon mesh filters out particles down to 8 µm. These are ideal for finer macrofiltration needs and are suitable with all aqueous solutions. Polypropylene (PP) mesh offers strength and stability, while also being resistant to most acids, alkalies, and alcohols. These screens are autoclavable. The PEEK mesh holds its shape and features superior chemical resistance. These are ideal for general filtration, are resistant to acidic and alkaline solutions, and feature temperature stability up to 250°C. The 304 Stainless Steel woven discs or sheets are ideal for high differential pressure applications as they are durable and feature extra strength.
Sigma Aldrich Fine Chemicals Biosciences Whatman(R) nitrocellulose membrane filters plain white, pore size 1 mum, diam. 47 mm |
Whatman(R) nitrocellulose membrane filters plain white, pore size 1 mum, diam. 47 mm |
Sterlitech Corporation PTFE Unlaminated Membrane Filters, 1.0 micron, 90mm, 10/Pk
PTFE Unlaminated Membrane Filters, 1.0 micron, 90mm, 10/Pk
Cayman Chemical ANTIBODY SR 11302 1mg
A synthetic retinoid that inhibits AP-1 activity without activating transcription through RARE; significantly suppresses both AP-1 activation and phorbol ester-induced papilloma formation in mice when applied topically (0.1 µM)
