Description
Quantitative filter paper grade 389 is intended for quantitative and gravimetric analyses as well as for pressure or vacuum filtration in the laboratory. These filter papers are manufactured from 100% cotton linters with an alpha-cellulose content of > 98% and are acid-washed to achieve an ash-free character and high purity for demanding analytical work. The pack contains 100 pieces and has a net weight of 2,933 kg, matching larger-format quantitative paper needs in busy analytical environments. Grade 389 supports classical wet-chemistry and gravimetric procedures where low ash contribution and consistent cellulose purity are required. Produced by manufacturer Sartorius, the paper fits standard filtration assemblies used under atmospheric, pressure or vacuum conditions. Supplied non-sterile for general laboratory use, it is aimed at quantitative workflows rather than qualitative screening alone. With origin in Germany, this grade 389 quantitative paper gives laboratories a defined cotton-linter medium for ash-sensitive gravimetric determinations and related filtration tasks in research, quality control and routine analysis.
This article is part of Filter paper, in Filtration.
Key features
- Pack size: 100 pc(s)
- Storage temperature: Room Temperature
- Grade: 389
- Material: 100% cotton linters, alpha-cellulose > 98%
- Treatment: Acid-washed, ash-free
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Questions about Quantitative Papers/ Grade 389
What is this article?
Quantitative Papers/ Grade 389 is the article on this page. Luminix Health distributes Sartorius 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?
We deliver across the EU, usually within two to five working days. More is on Delivery across the EU. 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.
