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
Hach Company Millipore S-Pak Type HC Membrane Filters, 47 mm, 0.7 um pore size, pk/150
Certified for fecal coliform analysis. Larger pore size (0.7 um) and funnel-like pores creates a less taxing environment for stressed organisms: lessens media loss from evaporation and easier filtration of high particulate samples common to effluents. Whi
Azzota Corp Microporous Filter, NYLON, Diameter: 47mm, Pore Size: 0.22um, 100/pk
Microporous Filter, NYLON, Diameter: 47mm, Pore Size: 0.22um, 100/pk.
Tisch Scientific MCE Membrane Filter, 0.22 µm, 293 mm, Nonsterile, 25 Pack, SF14676
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.
Welker Inc Welker Burst/Rupture Disc for Constant Pressure Cylinder (CPC)
Pressure Rating: 1900 psig ; Tolerance: -7.85% / +11.3% ; Material: ALY600-PTFE ; Torque20 ft. lbs.
Azzota Corp Microporous Filter, NYLON, Diameter: 47mm, Pore Size: 0.80um, 100/pk
Microporous Filter, NYLON, Diameter: 47mm, Pore Size: 0.80um, 100/pk.
Foxx Life Sciences EZFlow Hydrophobic PTFE Membrane Filters, 0.22um, 47mm Diameter Filter Discs, 50/PK
365-2612-OEM: EZFlow Membrane Disc Filter, 0.22um Hydrophobic PTFE, 47mm, 50/pack. EZFlow 13mm, 25mm, 47mm, and 90mm membrane disc filters are used to retain particles or microorganisms by surface capture. The membrane disc filters are available in Nylon or Hydrophobic PTFE with polypropylene support, in 0.2um or 0.45um pore sizes. The Nylon membrane has great chemical resistance, and is ideal for filtering more aggressive solutions such as alcohols and DMSO. The Hydrophobic PTFE membrane is bonded to a polypropylene support. Due to its extreme chemical compatibility, they are ideal for the filtration of solvents and acids, or other aggressive chemicals. All materials comply with USP Class VI Standards and FDA compliances.
ANALYTICAL SCIENTIFIC INSTRUMENTS US INC 1.2UM TUNGSTEN PARTICLES 50 GR
NC3002621 1.2UM TUNGSTEN PARTICLES 50 GR