Description
Qualitative filter paper, folded, 90 mm is a laboratory cellulose filter medium for routine qualitative separations. It has a basis weight of 80 g/m² and a slow filtration characteristic, supporting controlled gravity filtration of precipitates and suspended solids in analytical, teaching, and quality-control workflows. The 90 mm diameter matches common small- and medium-volume funnels used for everyday sample clarification. Pre-folded circles sit ready in the funnel, shortening set-up time at the bench compared with flat sheets that must be creased by hand. Packs contain 100 pieces from manufacturer filtraTECH, giving a practical stock unit for shared laboratories and training suites. Qualitative grades are intended for general clarification and qualitative observation rather than quantitative ash-free work. The moderate mass and slow flow profile favour retention when rapid throughput is not required, helping keep finer flocs on the paper during gravity runs. Suitable for aqueous media and many common laboratory solvent systems, this folded qualitative paper is a straightforward consumable wherever a defined diameter, consistent handling, and slow filtration behaviour are needed for preparatory chemistry and routine bench filtration.
This article is part of Filter paper, in Filtration.
Key features
- Pack size: 100 pc(s)
- Type: Qualitative filter paper
- Form: Folded
- Basis weight: 80 g/m²
- Filtration speed: Slow
- Diameter: 90 mm
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Questions about Folded qualitative filter paper, 90 mm
What is this article?
Folded qualitative filter paper, 90 mm is the article on this page. Luminix Health distributes filtraTECH for laboratory use. It sits in Filter paper, inside Filtration, in Lab consumables.
Filter paper is a cellulose sheet of a stated retention and speed. Qualitative paper clarifies. Quantitative, ashless paper is for a precipitate that will be weighed or ashed, because the paper itself leaves almost no ash. The diameter has to match the funnel.
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 Filter paper. The catalogue is Lab consumables.
Shelves beside this one are Sintered glass filter plates & discs, Syringe filters, Filter cartridges & capsules, Membrane filters, 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.