Description
Qualitative filter paper, 90 mm is a circular laboratory filtration medium for routine qualitative separation work. It combines a basis weight of 150 g/m² with a medium/slow filtration characteristic, supporting controlled retention of precipitates and particulates during everyday analytical and preparative steps. The 90 mm diameter fits common funnels and small filtration assemblies used in research, teaching, and quality-control laboratories. Packaged as 100 pc(s), the format is practical for continuous bench stocking and parallel sample work. This qualitative grade from manufacturer filtraTECH is intended for clarifying solutions, collecting solids, and general sample preparation where a qualitative rather than quantitative paper grade is specified. Medium/slow flow helps balance particle retention with workable throughput for many aqueous laboratory filtrations. Teams that maintain several disc sizes can assign the 90 mm format to smaller vessels and funnels while keeping handling consistent across the series. Uniform sheet properties aid day-to-day reproducibility in training labs and routine workflows that rely on standard qualitative filter paper.
This article is part of Filter paper, in Filtration.
Key features
- Pack size: 100 pc(s)
- Type: Qualitative filter paper
- Diameter: 90 mm
- Basis weight: 150 g/m²
- Filtration speed: Medium/slow
- Form: Circular discs
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Questions about Qualitative filter paper, 90 mm
What is this article?
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 Consommables.
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 Consommables.
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.