Engine oil filter paper
GOOLEE can produce such asPaper chromatography is an inert support with filter paper. The filter paper fiber and the water have strong affinity, absorb about 22% of water, and 6 to 7% of water is combined with the hydroxyl group of the cellulose in the form of a hydrogen bond, which is more difficult to take off under normal conditions, and filter paper fibers The affinity with the organic solvent is weak, so the general paper chromatography is actually a fixed phase with the binding water of the filter paper, and the organic solvent is a mobile phase. When the flow phase passes the sample, the solute on the sample point is in water and The organic phase is constantly allocated, a part of the sample moves with the flow phase, into the solvent-free zone, and then redistribute, a part of the solute from the mobile phase into the fixed phase (water phase). As the mobile phase continues to move, various portions are constantly assigned according to their respective distribution factors, and move along the flow phase, so that the substance is separated and purified.
Filter Paper is a filtering tool commonly seen in the chemical laboratory, common shapes, and is made of cotton fibers.
Filter papers can generally be divided into qualitative and quantitative. In an analysis of chemical applications, after the inorganic compound is filtered out of the precipitate, the residue on the filter paper can be used as a flow rate during the calculation of the experiment. The qualitative filter paper has more cotton fibers after filtration, so it is only suitable for performing a proof analysis; quantitative filter paper, especially the frustrated filter paper passes through a special processing procedure, can be more effectively resistant to chemical reactions, so the resulting There are few impurities and can be used as quantitative analysis. In addition to the filter paper applied by the general laboratory, there are many applications in life and engineering paper. Coffee filter paper is one of the widely used filter paper, and the outer layer of tea is provided with high softness and wet strength and high characteristics. Other air filter paper using the test air, and fiber filter paper in different industrial applications.
