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

406 – 420 of 851 results

406

Grainger Filter 75 mm Dia 500 mL 0.45 u

Filter 75 mm Dia 500 mL 0.45 um PK12

Pricing & Availability

407

Ace Glass, Inc. 2.95" 105 micron polypropylene filter for #80 threaded adapters. Pkg/6.

2.95 105 micron polypropylene filter for #80 threaded adapters. Pkg/6.

Pricing & Availability

408

MDI Membrane FLTR MDI GCN 47MM 0.2 EO 100PK

mdi grid marked Cellulose Nitrate membrane filters, 47 mm, 0.2 µm, EO-sterile, 100 PK

Pricing & Availability

409

MDI Membrane FLTR MDI CN 47MM 0.2 EO 100PK

mdi Cellulose Nitrate membrane filters, 47 mm, 0.2 µm, EO-sterile, 100 PK

Pricing & Availability

410

MDI Membrane FLTR MDI GCN 47MM .45 EO 100PK

mdi grid marked Cellulose Nitrate membrane filters, 47 mm, 0.45 µm, EO-sterile, 100 PK

Pricing & Availability

411

Foxx Life Sciences EZFlow Nylon Hydrophilic Membrane Filters, 0.45um, 47mm Diameter Filter Discs, 50/PK

364-3612-OEM: EZFlow Membrane Disc Filter, 0.45um Nylon, 47mm, 50/pack. EZFlow 13mm, 25mm, 47mm, and 90mm membrane disc filters are used to retain particles or microorganisms by surface capture. The membrane disc filters are available in Nylon or Hydrophobic PTFE with polypropylene support, in 0.2um or 0.45um pore sizes. The Nylon membrane has great chemical resistance, and is ideal for filtering more aggressive solutions such as alcohols and DMSO. The Hydrophobic PTFE membrane is bonded to a polypropylene support. Due to its extreme chemical compatibility, they are ideal for the filtration of solvents and acids, or other aggressive chemicals. All materials comply with USP Class VI Standards and FDA compliances.