Description
Round filter black band 1 is a fast qualitative laboratory filter paper with a filter diameter of 125 mm, offered in a pack of 100 pieces. This round filter is intended for routine filtration tasks where a high flow rate is preferred, such as clarification of suspensions, separation of coarse precipitates, and general sample preparation in analytical and teaching laboratories. The black band 1 grade is characterised as a fast type, supporting efficient throughput when retention of the finest particles is not the primary requirement. Each disc has a 125 mm diameter so that it seats cleanly in funnels and holders matched to that size, helping maintain consistent filtration geometry across repeated runs. Supplied from manufacturer Witeg, the filters come as a practical 100-piece pack with a net weight of 0,116 kg, suited to busy benches that consume filter paper regularly. Use them for aqueous and many common laboratory solutions in quality control, research, and educational settings that rely on classical paper filtration rather than membrane systems. The simple round format keeps handling straightforward from box to funnel.
This article is part of Filter paper, in Filtration.
Key features
- Pack size: 100 pc(s)
- Product type: Round filter
- Grade: Black band 1
- Filtration speed: Fast
- Diameter: 125 mm
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Questions about Round filter 125mm
What is this article?
Round filter 125mm is the article on this page. Luminix Health distributes Witeg 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.