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
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
Essendant DISPENSERTCHLSWL MN
The MOD Dispenser Systems are designed with innovative internal dispensing modules that plug and play to give you the flexibility to build a dispenser customized to meet your requirements The E-Series dispensers provide electronic motion-activated dispensing with the option for an unexposed sheet making it ideal for healthcare facilities This system is also quieter than enMotion and Tork Intuition systems The MOD System combines touchless technology with the bacteria-reducing benefits of drying with paper towels supporting and promoting better hand and surface hygiene When installed properly this dispenser meets the ADA Standards for Accessible Design 28 CFR Part 36 local rules may vary
Sterlitech Corporation Polycarbonate (PCTE) Membrane Filters, 10.0 Micron, 47mm, 100/pk
Polycarbonate (PCTE) Membrane Filters, 10.0 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
Chemglass Life Sciences Fritted Disc, 20mm, Coarse
Fritted Disc, 20mm, Coarse. Porous discs for use in fabrication of special glass apparatus. Fritted glassware is designed for low pressure vacuum filtration or gas flow. The MAX differential pressure should not exceed 15 PSI. Fritted glassware should not be exposed to excessive temperature change or direct exposure to flame due to the fact that it has less resistance to thermal shock than standard borosilicate glassware.
Cole-Parmer PTFE Membrane, 13 mm, 0.2 m, 100/pk
Durable laminated PTFE membranes are unaffected by even the most corrosive compounds, including concentrated acids, alkaline, and propellants. Membranes withstand temperatures from –100 to 130C (–148 to 266F). Use these hydrophobic membranes for sterile venting and filtration of gas, air steams, and organic solvents. Prewet with acetone or methanol for aqueous solutions.