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
Alkali Scientific CellPro™ MCE (Mixed Cellulose Ester) Membrane Filter, 100/Pk, 47 mm, 0.45 μm
CellPro™ MCE (Mixed Cellulose Ester) Membrane Filters are high performance filtration membranes commonly used in laboratory and industrial applications for microbiological analysis, particle monitoring, and air/water testing. These filters are composed of a blend of cellulose acetate and cellulose nitrate, combining the strengths of both materials for reliable and consistent performance. Key Features: High Porosity (up to 80–85%): Ensures fast flow rates and high throughput. Uniform Pore Structure: Provides accurate and consistent retention of microorganisms and particles. Hydrophilic Nature: Eliminates the need for pre wetting with surfactants; ideal for aqueous solutions. Low Extractables: Minimizes contamination risks in sensitive analyses. Smooth, White Surface (or Gridded Options): Makes it easy to visually inspect and count colonies during microbiological testing.
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 Aluminum Oxide Membrane Filters, 0.1 Micron, 13mm, 50/pk
Aluminum oxide membranes feature uniform, densely-packed honeycomb pore structures that contribute to precise retention and high porosity characteristics.Applications:* HPLC sample and mobile phase filtration* Filtration of aggressive organic solvents* Virus concentration and analysis* Analysis of micro plastic in water* Epifluorescence microscopy* Synthesis of nanostructures (e.g. nanotubes)Features:* Fast filtration, efficient separation and high purity* High number of tightly controlled pores in honeycomb shape* Free of organic extractables and leachables* Minimum adsorption* Transparent when wet
Foxx Life Sciences EZBio Rigid Reservoir for Tangential Flow Filtration (TFF) System, PP, 2.5L Rectangular Welded Carboy, 83B, VersaCap w/ Rigid tubing 1x Mini TC on 3/8"ID x 1/2"OD, 1x Maxi TC on 9/16"IDx3/4"OD, 1x 3/8"HB w/ Bottom Drain Mini TC, Non-Sterile, 1/CS
The EZBio SUT Rigid Reservoir System is a single-use rigid bioprocess carboy and bottle solution for fluid handling, supporting upstream and downstream processes. It provides a sterile, closed, scalable platform with integrated rigid tubing for secure, kink-free transfer of buffers, media, process fluids.
Available in 1L–115L volumes (PP bottles/carboys), it features VersaCap technology with customizable 2–5 ports (Mini/Maxi TC options) & bottom Tri-Clamp port for efficient drainage. Plug-and-play integration simplifies setup, reduces contamination risk, and speeds workflows.
Features
Made from USP Class VI materials, gamma-sterilizable, autoclavable (15 PSI, 20 min at 121°C)
Rigid dip tube with notch to allow for easy filling and extraction of media
Bottom TC for quick media harvest
Laser marked ports for quick identification
Multi-port cap system
Applications
Bioprocess storage, aseptic transfer
Cell Harvest
Closed collection system
Sterlitech Corporation Polycarbonate (PCTE) Membrane Filters, 0.03 Micron, 13mm, 100/Pk
Polycarbonate (PCTE) Membrane Filters, 0.03 Micron, 13mm, 100/Pk
Sterlitech Corporation PTFE Unlaminated Membrane Filters, 0.2 micron, 25mm, 50/pk
PTFE MEMBRANE FILTERS, UNLAMINATED, 0.2 MICRON, 25MM, 50/PK
Ace Glass, Inc. 25mm ID x 30cm chromatography column, 24/40 outer top, 250mL reservoir, without filter disc
25mm I.D. x 30cm chromatography column with 250mL reservoir at top and 2mm bore 1:5 PTFE stopcock plug at bottom. Opening at top is for a 24/40 outer joint.
Sigma Aldrich Fine Chemicals Biosciences Whatman(R) nitrocellulose membrane filters plain white, pore size 1 mum, diam. 47 mm |
Whatman(R) nitrocellulose membrane filters plain white, pore size 1 mum, diam. 47 mm |
Ace Glass, Inc. 2.874" 350 micron polypropylene filter for #80 threaded adapters. Pkg/12.
2.874" 350 micron polypropylene filter for #80 threaded adapters. Pkg/12.
