Description
Spectra/Por® 3 dialysis membrane is a laboratory dialysis tubing membrane specified with a molecular weight cut-off (MWCO) of 3500 and a flat width of 45 mm. It is intended for dialysis and buffer-exchange separations in which solutes below the stated MWCO can diffuse while larger macromolecules are retained. The 45 mm width suits standard sample volumes and common dialysis setups used in protein work, desalting, and sample cleanup. Supplied as 1 unit, the membrane integrates into established Spectra/Por® workflows familiar to many biochemistry and molecular biology laboratories. Physical dimensions and cut-off rating support method planning for concentration, impurity removal, and equilibration steps. This membrane from manufacturer REPLIGEN is positioned for filtration, water purification, dialysis, and separation applications where a defined MWCO hose membrane is required. Clear MWCO and width data help match the membrane to sample size and retention needs without unnecessary reformulation of existing protocols.
This article is part of Ultrafiltration & concentrators, in Filtration.
Key features
- Pack size: 1 pc
- Product type: Dialysis membrane
- Series: Spectra/Por® 3
- MWCO: 3500
- Width: 45 mm
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Questions about Spectra/Por® 3, dialysis membrane, MWCO 3500, width 45 mm, 1 unit(s)
What is this article?
Spectra/Por® 3, dialysis membrane, MWCO 3500, width 45 mm, 1 unit(s) is the article on this page. Luminix Health distributes REPLIGEN for laboratory use. It sits in Ultrafiltration & concentrators, inside Filtration, in Lab consumables.
An ultrafiltration device holds back macromolecules above a stated molecular-weight cutoff and passes salts and water. It concentrates a protein or exchanges its buffer. The cutoff, the volume and whether it is a centrifugal device or a stirred cell are the specification. A 0.2 µm syringe filter does not do this.
Filtration holds back what is larger than the pores and lets the rest through. Paper is the ordinary laboratory filter. A membrane has a stated pore size and a polymer that must survive the solvent. A syringe filter is that membrane in a housing on a syringe. Glass fibre takes a higher dirt load. Ultrafiltration holds back macromolecules and passes salts. The pore size, the chemical compatibility and the volume are the three choices. Laboratory apparatus around filtration is indexed under ISO laboratory apparatus.
Which category should I open next?
The category is Filtration. The sub-category is Ultrafiltration & concentrators. The catalogue is Lab consumables.
Shelves beside this one are Filter paper, Sintered glass filter plates & discs, Syringe filters, Filter cartridges & capsules, Membrane filters, Glass & quartz fibre filters, Bottle-top & vacuum filtration units, Filtration accessories, Extraction thimbles and Dialysis tubing & devices.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

