Sigma-Aldrich WHA1450090 Whatman® quantitative filter paper, hardened low-ash, Grade 50 circles, diam. 90 mm, pack of 100
| WHA1450090 Whatman® quantitative filter paper, hardened low-ash, Grade 50 circles, diam. 90 mm, pack of 100 |
|
Synonym(s): Whatman filter, Z241741, filter paper, paper filter
NACRES: NB.24
SDS için Resmi Tıklayınız!!! |
|
PROPERTIES
material circles cotton filters (high-quality cotton linters)
packaging pack of 100
manufacturer/tradename Whatman 1450-090, Whatman Article No. 28418080 (US reference)
parameter 2685 sec/100 mL speed (Herzberg), 6 psi wet burst diam. 90 mm
thickness 0.12115 μm
ash ≤0.015%
pore size 2.7 μm (Particle retention)
basis weight 97 g/m2
DESCRIPTION
General description
The maximum ash content of these filter paper grades is intermediate between ashless and qualitative grades. They are particularly suitable for Büchner filtrations where it is desirable to recover the precipitate from the filter surface after filtration. Other characteristics include high wet strength and chemical resistance which are similar to the acid hardened ashless filter papers.
Grade 50: 2.7 μm (slow filter paper)
Retention of very fine crystalline precipitates. The thinnest of all Whatman filter papers. Slow flow rate. Hardened and highly glazed surface. This finish also keeps the paper free from loose surface fibers. Highly suitable for qualitative or quantitative filtrations requiring vacuum assistance on Büchner or 3-piece filter funnels. Very strong when wet. Will withstand wet handling and precipitate removal by scraping. In the electronics industry, the virtual absence of fiber shedding is utilized in carriers for integrated circuits.
Other Notes
Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.
Legal Information
Whatman is a registered trademark of Cytiva |
