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)
Analytical Sales & Services MWCO Micro Spin Filters, 800µL Volume, PVDF 30,000 with 2.0ml Receiver Tubes
MWCO Micro Spin Filters, 800µL Volume, PVDF 30,000, with 2.0mL Receiver Tubes (Non-Sterile)
Ace Glass, Inc. 37mm quartz graded seals for connecting Pyrex or Kimax borosilicate glass to Quartz glass. Quartz length is 7.6cm, and borosilicate length is 10.2cm.
37mm quartz graded seals for connecting Pyrex or Kimax borosilicate glass to Quartz glass. Quartz length is 7.6cm, and borosilicate length is 10.2cm.
Ted Pella Inc ULTRATHIN QFOIL 1.2UM 100GRIDS
Ultrathin Carbon on Quantifoil, Orthogonal Array of 1.2µm Diameter Holes - 1.3µm Separation, mounted on a 300M Cu grid, package of 100 grids
Sterlitech Corporation PTFE Unlaminated Membrane Filters, Hydrophilic, 0.5 Micron, 47mm, 100/Pk
Durable, efficient, and broadly compatible, these pure, hydrophilic PTFE membranes are ideal for use with HPLC seperations, aqueous/organic solvents, and many of your other filtration needs. Pack of 100. Pore size: 0.50 microns. Diameter: 47 mm. Advantec P/N: H050A047A.
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.
Alkali Scientific CellPro™ DEPC Treated Ultra Pure Water, 1.0 Liter x 12 Bottles/cs
DEPC Treated Water (and therefore RNase-free) water is used in handling of RNA in the laboratory to reduce the risk of RNA being degraded by RNases. Water is usually treated with 0.1% v/v DEPC for at least 2 hours at 37 °C and then autoclaved (at least 15 min) to inactivate traces of DEPC. Inactivation of DEPC in this manner yields CO 2 and ethanol.