Description
Filter paper 400 is a medium-fast folded filter paper for clarifying work in the laboratory. As grade 400 material at 65 g/m² with a 90 mm diameter, it supports routine separation tasks in which a balanced filtration speed is preferred over very slow or very rapid grades. The pre-folded format enlarges the usable filtration surface and eases insertion into funnels, promoting consistent flow during clarification and sample preparation. Supplied in packs of 100 pieces, the filters are ready for regular use across analytical and preparative settings. Handling remains simple thanks to the pleated construction, which helps keep open channels for the filtrate while retaining particulate matter typical of clarifying applications. This filter paper from manufacturer Hahnemühle is intended for general laboratory clarifying steps rather than sterile or highly specialised membrane processes. The 90 mm size suits common mid-scale funnel arrangements in teaching, quality control, and research environments. Choose grade 400 folded filters whenever medium-fast clarifying performance is required for qualitative filtration, solvent work-up, or clean-up ahead of subsequent analysis.
This article is part of Filter paper, in Filtration.
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Questions about Filter paper 400, for clarification ,medium fast, 65 g/sqm ,Folded filter, 90 mm
What is this article?
Filter paper 400, for clarification ,medium fast, 65 g/sqm ,Folded filter, 90 mm is the article on this page. Luminix Health distributes Hahnemühle 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.
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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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

