Qualitative Filter Paper Oil Detect Lab Square Filter Paper 40cm*40cm for Industrial Scientis Research Teach Experiment 20 / PK(Rapid Filtration)

Qualitative Filter PaperSize: 40cm * 40cmPackage: 20 / pkAperture of rapid filtration is 80-130 micronAperture of medium filtration is 30-50 micronAperture of slow filtration is 1-3 micronHow 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 : 40cm * 40 cmOrigin : Mainland ChinaClassification : FlaskSize : 40 cm* 40cmFiltration speed : Fast/Medium/SlowPackage : 20 / PK

• 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. Marked on the ribbon of box in white, blue and red respectively.
• 3. 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.