Filtration Membrane Discs
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
Fisherbrand™ PTFE Filter Membranes
Fisherbrand™ PTFE membrane is hydrophobic filter made of polytetra-fluorethylene laminated with PP layer.
Sartorius Filtri a membrana in acetato di cellulosa
Combinano caratteristiche di portata elevata e stabilità termica con bassissimo assorbimento. I filtri a membrana in acetato di cellulosa Sartorius sono particolarmente adatti per l'uso con dispositivi di filtrazione a pressione. I filtri non sterili, disponibili con numerosi diametri e dimensioni dei pori, sono forniti sfusi in confezioni di grandi dimensioni per un risparmio economico e di spazio.
Promozioni disponibili
Fisherbrand™ Polyethersulfone Membranes
Fisherbrand™ Polyethersulfone Membranes features highly asymmetrical pore structure that offers effective loading capacity and high flow rate.
Cytiva Membrane in nylon
Flessibili e durevoli per manipolazioni semplici. Le membrane in nylon Cytiva sono naturalmente idrofile, per eliminare la necessità di agenti umettanti e preumettanti nella filtrazione di soluzioni acquose.
Fisherbrand™ Mixed Cellulose Ester Membranes Sterile Filter
Fisherbrand™ Mixed Celluloses Esters Membranes Sterile Filters are composed of cellulose acetate and cellulose nitrate.
Fisherbrand™ Membrane in nylon
Membrana naturalmente idrofilica ideata per imbibersi uniformemente pur conservando una resistenza superiore per filtrazioni generiche o saggi medici.
Sartorius Filtri a membrana quadrettati sterili in nitrato di cellulosa: μ
Controllo di qualità nella filtrazione microbiologica. I filtri a membrana quadrettati sterili in nitrato di cellulosa Sartorius, da 0.45 μm sono membrane confezionate singolarmente con griglie colorate per conta delle colonie, test delle particelle e microscopia. La dimensione dei pori di 0.45 μm è conforme alle direttive ISO 7704. Possibilità di scelta tra due diametri e una varietà di combinazioni di colore filtro/griglia.
Sartorius Filtri a membrana in politetrafluoroetilene (PTFE)
Filter air and gasses, even at low differential pressures. Sartorius PTFE (Polytetrafluorethylene) Membrane Filters are permanently hydrophobic with low adsorption and excellent chemical compatibility. Choose from four pore sizes in a variety of diameters.
Thermo Scientific™ Membrana per la qualità dell'acqua Nalgene™
Carry out particulate and microbial analysis with these filter membranes. Available in various forms for water quality work, cold sterilization or sample clean up.
Cytiva Membrane in nitrato di cellulosa tipo WCN
Consigliata per la maggior parte delle applicazioni di routine, questa membrana viene prodotta in condizioni strettamente controllate. Membrane in nitrato di cellulosa Cytiva tipo WCN con distribuzione fitta dei pori per una maggiore capacità di cattura e analisi della superficie.
Promozioni disponibili
Cytiva Whatman™ 47 mm Nuclepore™ Polycarbonate Track-Etched Membranes
Manufactured from high-quality polycarbonate film and track-etched for high pore size precision. Whatman™ 47mm Nuclepore™ Polycarbonate Hydrophilic Membranes combine high flow rates and chemical and thermal resistance with sharply defined pores, making them suitable for microscopy, cytology, parasitology, and certain air and oceanography analyses.
Sartorius Polyethersulfone Membrane Filters
Polyethersulfone (PES) filters have a high internal porosity.
Cytiva Dischi drenanti in poliestere
Provides a flat surface to eliminate filter tearing or rupturing. Whatman™ Polyester Drain Discs are used to support membrane filters. They are available in a variety of diameters for use in a range of devices.
Cytiva Whatman™ 3 μm Pore Size (ME 29) Mixed Cellulose Ester Membranes, Plain
Whatman™ (ME 29) Mixed Cellulose Ester Membranes, Plain are particularly effective in applications requiring higher flow rates and larger volume filtration including clarification or sterilization of aqueous solutions, particulate analysis and removal, air monitoring, and microbial analysis.
Cytiva Membrane in acetato di cellulosa
Per preparare cocktail di scintillazione in fase liquida per misurazioni con contatore per scintillazione. Le membrane in acetato di cellulosa Whatman™ sono estremamente termoresistenti e possono filtrare liquidi e gas caldi.
