Qualitative Filter PaperSize: 40cm * 40cm
Package: 20 / pk
Aperture of rapid filtration is 80-130 micron
Aperture of medium filtration is 30-50 micron
Aperture of slow filtration is 1-3 micron
Features:
1. Large filter paper, also known as qualitative filter paper. It is a filter paper commonly used in chemical laboratories for the filtration of sediments and suspended solids. Its silicon content is higher than quantitative filter paper, and it has a certain amount of ash after burning.
2. According to the filter aperture size, filter paper is divided into fast speed, medium speed and slow speed.
3. Large filter paper uses cotton pulp or refined kraft pulp as material, after beating free, and then impregnated with hydrochloric acid fiber purification, low-pressure slow-pressing in the paper machine.
How to choose filtration rate?
According to different types of precipitation options. When filtering colloidal precipitates such as iron hydroxide and other substances please choose fast speed; when filtering fine crystals such as barium sulfate precipitation please choose slow speed.
Origin : Mainland China
Classification : Flask
Filtration speed : Fast/Medium/Slow