Bottle-top & vacuum filtration units

Disposable bottle-top filters screw straight onto a media or buffer bottle and filter under vacuum into it, so there is no transfer step; many are sterile, which the product page states. They suit routine media preparation, for example bottle-top filters with PES membrane. A reusable glass unit with filter support and collecting flask takes loose discs from membrane filters and suits repeated or analytical filtration. Both need a vacuum source from vacuum pumps. Unsure which set-up fits your volumes? Ask sales@luminixhealth.com.

PES is the usual choice for aqueous media and buffers because it filters quickly. SFCA, a surfactant-free cellulose acetate, is chosen where the product page points to low protein binding, as with bottle-top filters with SFCA membrane. Cellulose nitrate suits particle work and microbiology, for example filter units with CN membrane. PTFE is hydrophobic and suits solvents or venting. Rely only on the properties stated on each product page. Need help matching a membrane to your liquid? Ask sales@luminixhealth.com.

Choose by purpose. 0.2 or 0.22 µm is the pore size for sterile filtration of media, buffers and additives. 0.45 µm clarifies solutions and removes particles where sterility is not the aim. 0.8 µm works as a prefilter for loaded liquids, so the finer membrane behind it does not block. The pore size is in each product title on this page, such as filter units with CN membrane. For volumes of a few millilitres, syringe filters are more practical. Not sure which pore size your protocol needs? Ask sales@luminixhealth.com.

Match two volumes: the funnel, which holds the liquid you pour in, and the receiving bottle or flask, which holds the filtrate. Common sizes are 250, 500 and 1000 ml; the product title states them. For a bottle-top filter, the thread of the filter must fit the neck of your bottle, so check the thread size on both product pages, for example filtrate bottles for bottle-top filters, 1000 ml or our laboratory glass bottles. You also need a vacuum source. Unsure whether parts fit together? Send both product names to sales@luminixhealth.com.

A bottle-top filter or a vacuum filtration unit sits on a bottle and pulls a liquid through a membrane under vacuum. Pore size and membrane are the same choice as a syringe filter, at a larger area. A sterile unit is a stated claim. The bottle neck has to match.

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.

This shelf belongs to Filtration, inside Lab consumables. Luminix Health distributes this range for laboratory use.

The neighbouring shelves are Filter paper, Sintered glass filter plates & discs, Syringe filters, Filter cartridges & capsules, Membrane filters, Glass & quartz fibre filters, Ultrafiltration & concentrators, Filtration accessories, Extraction thimbles and Dialysis tubing & devices. The category above this shelf is Filtration.

Luminix Health distributes this range from the heart of Europe. We deliver across the EU in two to five days if in stock. 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. Send a quote request, contact the team, or read who we are. The full brand index is on shop by brand.

The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology. If the article is not on the shelf, request a quote.