This document mainly introduces the classification of filter paper, as well as the characteristics, application fields, manufacturing processes of qualitative and quantitative filter paper, providing a comprehensive reference for related analytical and testing work.
1. Overview of Filter Paper
Filter paper, as a specialized analytical material, is mainly divided into qualitative and quantitative types. In terms of filtration speed, it can be categorized into fast, medium and slow types; in terms of size, common specifications include d7cm, d9cm, d11cm, d12.5cm, d15cm and d18cm. Among them, qualitative filter paper is designed for qualitative analysis and testing purposes, with wide applications across multiple fields.
2. Application Fields of Qualitative Filter Paper
Qualitative filter paper is widely used in scientific research, industry, agriculture, medicine, health, and environmental protection for qualitative analysis and testing purposes.
3. Key Characteristics & Application Limitations of Qualitative Filter Paper
Qualitative filter paper generally has a higher residual ash content, which means it is only suitable for general qualitative analysis and for filtering precipitates or suspended solids in solutions; it cannot be used for quantitative analysis.
It typically employs natural filtration, utilizing the paper’s structure and its ability to retain solid particles to separate liquids from solids.
4. Manufacturing Process & Material Advantages of Qualitative Filter Paper
Qualitative filter paper is manufactured from high-quality, premium cotton using modern, unique papermaking processes and advanced papermaking equipment. It is a pure cotton paper characterized by high purity, uniform texture, a certain filtration speed, and a certain level of strength.
