Description
Nalgene™ water quality membrane is a gridded glass membrane configured as a prefilter for water quality and related laboratory filtration tasks. The membrane diameter is 50 mm, and the glass fibre material supports retention of particulates ahead of finer analytical steps. A gridded membrane surface assists orientation and colony or particle counting during visual inspection after filtration. Units are supplied sterile in packs of 100 pieces, providing convenient stock for high-throughput environmental monitoring and routine water testing. Available from manufacturer Thermo Scientific, these membranes fit standard round-filter holders and funnels used in quality-control and research laboratories. The prefilter type helps protect downstream membranes and instruments by removing larger debris from aqueous samples. Consistent diameter and sterile packaging support reproducible workflows in municipal, industrial, and laboratory water analysis programmes. Whether used for sample screening or as a preparatory filtration stage, the 50 mm gridded glass format offers a practical consumable for membrane-based water quality methods.
This article is part of Membrane filters, in Filtration.
Key features
- Pack size: 100 pc(s)
- Membrane diameter: 50 mm
- Membrane material: Glass
- Support material: Glass fibre
- Membrane type: Gridded
- Type: Prefilter
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Questions about Nalgene™ Membrane and Prefilter Disks
What is this article?
Nalgene™ Membrane and Prefilter Disks is the article on this page. Luminix Health distributes Thermo Scientific - Laboratory Plastics for laboratory use. It sits in Membrane filters, inside Filtration, in Consommables.
A membrane filter is the disc itself, without a syringe housing. Pore size, polymer and diameter are the specification, and the disc has to sit in a holder. Gridded membranes are for counting colonies. A membrane and a filter paper of the same diameter are not interchangeable.
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 Membrane filters. The catalogue is Consommables.
Shelves beside this one are Filter paper, Sintered glass filter plates & discs, Syringe filters, Filter cartridges & capsules, Glass & quartz fibre filters, Bottle-top & vacuum filtration units, Ultrafiltration & concentrators, Filtration accessories, Extraction thimbles and Dialysis tubing & devices.
What should I check before I order?
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.