3 Micron Filter Paper
Filtration Speed: Slow
Product Appearance: Good
Ash Content(%): < 0.007
Wet Burst(psi): 0.4
Basis Weight(g/m²): 77
Availability: In Stock
Hawach BIO 44 cellulose filter paper is a star product equivalent to Whatman Grade 44 with a more competitive price, pore size 3 micron, which has a high retention rate and a slow flow rate. Regardless of the size, BIO-44 has lower ash than others in this series. The efficiency of collecting small particles is slightly lower than that of 2.5 micron filter paper BIO-42, but the flow rate is faster.
Because the cotton fiber in the filter paper has a good affinity with water, it can absorb about 22% of water, of which 6% to 7% of water is combined with cellulose in the form of hydrogen bonds. In general, it is very difficult to remove. Compared with the affinity with water, the affinity of the cotton fiber in the cellulose filter papers with the organic solvent is weaker.
Therefore, in most cases, the paper chromatography method uses the bound water in the filter paper fibers as the stationary phase, and the mobile phase is based on organic solvents. When the mobile phase of the organic solvent passes through the sample, it will continuously distribute the water and the organic phase, and then as the mobile phase continues to move, the substances of various components are continuously redistributed, which further enables the substances to be separated and purified. This use of filter paper is generally common in chemical laboratories.
|Hawach Scientific Co., Ltd||Whatman||Advantec||Munktell||Ahlstrom||Macherey Nagel|
Guide for Filter Paper
|Filtration Speed||Ash Content|
|Item #||Description||Pore Size||Diameter||Package|
|BIO-44-055||Grade 44, Slow flow rate||3μm||55mm||100pcs/pk|