BASIC INFO
Big square Filter paper, 1000 sheets (for industry and laboratory)
Unit price(60x60cm): US $ 200 / carton
Delivery fee is not included
Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine substances from liquids or air.Filter paper are widely used in laboratory experiments across many different fields, from biology to chemistry. The type of filter used will differ according to the purpose of the procedure and the chemicals involved. Generally, filter papers are used with laboratory techniques such as gravity or vacuum filtration.
Two major types of filter paper
1, Qualitative filter paper
Qualitative filter paper is used in qualitative analytical techniques to determine materials. There are different kinds of qualitative filter paper according to different pore size.
Product name | Model | Max. aperture(μm) | Filtration velocity(s) | Ash content(%) | Ration(g/m2) | |
Qualitative filter paper | 101 | Fast | 20-25 | 35 | ≤0.15 | 80±4 |
102 | Medium | 15-20 | 35-70 | ≤0.15 | 80±4 | |
103 | Slow | 10-15 | 70-140 | ≤0.15 | 80±4 |
2, Quantitative Filter Paper
Quantitative filter paper, also called ash-free filter paper, is used for quantitative and gravimetric analysis. During the manufacturing, producer use acid to make the paper ash-less and achieve high purity.
Product name | Model | Max. aperture(μm) | Filtration velocity(s) | Ash content(%) | Ration(g/m2) | |
Qualitative filter paper | 201 | Fast | 20-25 | 35 | ≤0.01 | 80±4 |
202 | Medium | 15-20 | 35-70 | ≤0.01 | 80±4 | |
203 | Slow | 10-15 | 70-140 | ≤0.01 | 80±4 |
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