Square Qualitative Filter Paper Oil Detect Lab Filter Paper 20cm*20cm for Industrial Scientis Research Teach Experiment 100 / PK(Medium Filtration)

Qualitative Filter PaperSize: 20cm * 20cmPackage: 100 / pkAperture of fast filtration is 80-130 micronAperture of medium filtration is 30-50 micronAperture of slow filtration is 1-3 micron Product Features:Square 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.According to the filter aperture size, filter paper is divided into fast speed, medium speed and slow speed. Marked on the ribbon of box in white, blue and red respectively.Large filter paper use cotton pulp or refined kraft pulp as raw material, after beating free, and then impregnated with hydrochloric acid fiber purification, papermaking machine in a slow press made of low pressure.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.==========Model Number : 20cm*20cmOrigin : Mainland ChinaSize : 20cm*20cmFiltration rate : Fast/Medium/SlowPackage : 100 / PK

• Qualitative Filter Paper
• Size: 20cm * 20cmPackage: 100 / pk
• Aperture of fast filtration is 80-130 micron
• Aperture of medium filtration is 30-50 micron
• Aperture of slow filtration is 1-3 micron