Very fine 2–4 µm porosity: excellent retention of the finest particles and precipitates.
Very slow filtration (200 s): maximum clarification for demanding qualitative analyses.
Pleated design: increased filtration area and higher capacity before clogging at fine porosity.
What is a qualitative filter paper, pleated, very slow filtration used for?
Very slow qualitative pleated filter paper is designed for gravity filtration where maximum clarification is more important than speed. It is particularly suitable for demanding qualitative analyses, filtration of very fine precipitates, and sample preparation before chemical, spectroscopic, or gravimetric analysis.
What are the benefits of pleated filter paper?
The pleated format significantly increases the filtration surface area and retention capacity. This helps reduce clogging and improves usability in gravity filtration, even with a very fine pore structure.
What is the pore size of FL.PSP1?
This reference has a pore size of 2 to 4 µm. It is suitable for retaining very fine particles and fine precipitates when a very clear filtrate is required.
What is the filtration speed of this filter paper?
The product page states a very slow filtration speed, with a 200-second filtration time according to DIN 53137. This grade is therefore intended for applications where clarification fineness is the main priority.
Is this filter suitable for gravity filtration?
Yes. This reference is specifically intended for gravity filtration. Its very slow profile and fine porosity make it a good choice for demanding qualitative filtration work.
What are the mechanical characteristics of this filter paper?
FL.PSP1 has a basis weight of 80 g/m², a thickness of 0.16 mm, and a burst resistance greater than 20 kg/cm². These characteristics contribute to good mechanical stability during filtration.
What diameters are available?
This reference is available in 70, 90, 110, 125, 150, 185, 210, 240, 270, and 320 mm diameters. It can therefore fit many common laboratory funnels and filtration setups.
What is the packaging format?
The product is sold in packs of 100 pleated filters.
When should this filter paper grade be chosen?
This grade is especially suitable when maximum clarification is required, for example for very fine precipitate filtration or sample preparation before analysis. It is more focused on filtrate quality than speed.
Are there cross references for this filter paper?
Yes. AllFilter FL.PSP1 may be associated with several market references, including Cytiva/Whatman 5, Prat Dumas 210, Albet 414 / FP602h, Filter-Lab 1256, Fioroni 115, Macherey-Nagel 619, Schleicher & Schuell 602eh / 602H, Labbox QLDS, CHMLAB F1005, Advantec 235, Munktell 120H, Filtrak 291, Hahnemuehle FP602eh, Ahlstrom-Munksjö 610, and MFS 1293.
These correspondences are provided for identification purposes only to help users locate comparable product types or applications. They do not constitute a contractual equivalence, a guarantee of perfect compatibility, or any claim of common origin.
All trademarks mentioned are the property of their respective owners and are not owned by AllFilter or AllChimie. Users remain responsible for verifying technical suitability for their intended application, especially regarding dimensions, pore size, filtration speed, chemical compatibility, and operating conditions.
