Characteristics
Usually, there are four major properties for customers to choose their suitable filter papers. The chart has been summarized below.
| Characteristic | Related Principle |
| Hardness | The filter paper can become wet in the filtering procession, so some experimental steps with a long time should consider the tougher filter paper after its wetness. |
| Filtration efficiency | The density and size of the pore on the filter paper all impact the filtration efficiency that shows in fast filtering speed and high resolving ability. |
| Capacity | Solid particles can be accumulated during filtration and block small holes on the paper, so the denser the pore is, the higher the capacity would be. |
| Applicability | Some filter papers are manufactured according to especially given steps, such as the use of nitrogen-free filter paper in the determination of blood nitrogen content of pharmaceutical products. |
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