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
Analytical Sales & Services MWCO Micro Spin Filters, 800µL Volume, Pes 10,000 with 2.0ml Receiver Tubes
MWCO Micro Spin Filters, 800µL Volume, PES 10,000, with 2.0mL Receiver Tubes (Non-Sterile)
Shockwatch Div Mri MaxiLog Alert -80C Single Use
A single-use, pre-programmed electronic temperature data recorder for measuring and documenting temperatures of dry ice shipments including vaccines, biological material, chemicals, pharmaceuticals, and other temperature sensitive products.•-80°C to 30°C / -113°F to 86°F•8K Memory (approx. 8,000 data points)•1-year operating life•8.8 cm x 3.49 cm x 1.58 cm / 3.5” x 1.38” x 0.62”•3 oz / 65g•±0.5°C at 0 to 10°C / ±0.9°C at extremes •±0.9°F at 32° to 50° F / ±3.6°F at extremes•0.1°C temperature resolution•1 year warranty•ER2045T Lithium coin cell •10 per box
Tisch Scientific MCE Membrane Filter, 5.0 µm, 47 mm, Nonsterile, 200 Pack, SF14634
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.
Sterlitech Corporation Polyethersulfone (PES) Membrane Filters, 0.1 Micron, 25mm, 100/Pk
POLYETHERSULFONE (PES) MEMBRANE FILTERS, 0.1 MICRON, 25MM, 100/PK
Cytiva Whatman™ 25mm Nuclepore™ Polycarbonate Track-Etched Membranes
Manufactured from high-quality polycarbonate film and track-etched for high pore size precision. Whatman™ 25mm Nuclepore™ Polycarbonate Track-Etched 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.
Cytiva Whatman™ 90mm Nuclepore™ Polycarbonate Track-Etched Membranes
Manufactured from high-quality polycarbonate film and track-etched for high pore size precision. Whatman™ 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.
Cytiva Whatman™ Black Cyclopore™ Membranes
For use with epifluorescence microscopy and applications requiring contrasting background.