Best Qualitative Filter Paper of 2026

The StonyLab Filter Paper is designed with a diameter of 75mm, making it ideal for various filtration tasks. Its coarse cellulose material effectively removes particles larger than 20 microns, ensuring a cleaner result for your experiments. With a filtration speed of 35 to 70 seconds, it provides efficient performance, saving you valuable time. Additionally, the low ash content of ≤0.15% means you can trust that impurities won’t interfere with your results. This product is also compatible with the StonyLab Porcelain Buchner Funnel, enhancing its usability.

The PATIKIL Filter Paper is ideal for qualitative analysis in laboratory settings. Its medium flow speed allows you to separate coarse and gelatinous precipitates effectively, ensuring clear results in your experiments. Made from high-quality white paper, it features strong absorption performance, making it convenient for various liquid filtration tasks. Additionally, the generous size of 60 x 60 cm lets you cut the paper to fit your specific needs, enhancing flexibility during use.

The Labasics Filter Paper offers 90mm diameter circles made of coarse cellulose, ideal for removing particles sized 15 to 20 microns. This means you can effectively filter out larger impurities with ease. The filtration speed ranges from 35 to 70 seconds, providing a good balance between thoroughness and efficiency, allowing you to complete your tasks promptly. Additionally, the low ash content of 0.15% or less ensures minimal residue is left behind, helping you achieve clean filtrates. This filter paper is also compatible with Labasics Porcelain Buchner Funnels, making it convenient for your filtration setup.

The StonyLab Filter Paper is designed to effectively remove particles larger than 25 microns, ensuring your filtration processes are efficient and reliable. With a diameter of 94 mm, it fits perfectly with StonyLab's Buchner Filtering Funnel, making it easy to use. Its fast filtration speed of 35 seconds or less allows you to save valuable time in your experiments. Additionally, the low ash content of ≤0.15% ensures that your samples remain uncontaminated, providing you with accurate results.

The Camlab 1173270 Filter Paper is designed for fast filtering, making it ideal if you need to process samples quickly and efficiently. Its pore size of 15.2 microns helps you retain particles between 12 to 15 micrometres, which is perfect for filtering out coarse materials. Made from nearly 100% pure cellulose, this filter paper ensures high quality and reliable performance. Additionally, its low ash content of approximately 0.06% means you get cleaner results with minimal residue, benefiting your precise filtration tasks.

The zenpore Grade 4 Filter is a reliable lab filter paper equivalent to Whatman qualitative grade 4, sized at 11cm. It acts as a fast pre-filter, helping you quickly clean up biological samples and organic extracts, making your routine clarifications more efficient. If you are involved in winemaking, this filter paper is perfect for filtering musts, ensuring a smoother process. Additionally, it offers high air flow collection, allowing you to collect large particulates in fast-moving air or fumes easily, providing convenience in various lab or production settings.

The zenpore Lab Filter Paper is a high-quality, 11 cm (110mm) filter ideal for various applications. It excels in agriculture by assisting in soil pre-filtration and nutrient absorption tests, ensuring accurate results. For brewing tests, it effectively removes turbidity from wort and aids in yeast filtration, enhancing your brewing process. Additionally, it plays a crucial role in air and gas filtration by monitoring specific atmospheric contaminants, helping you maintain clean air quality. With its high retention and slow flow, this filter retains fine crystalline particles, ensuring clarity in your results.

The PATIKIL Filter Paper Circles are ideal for general qualitative analysis, allowing you to separate coarse and gelatinous precipitates from solutions effectively. Made from white paper with a 7cm diameter, these circles offer slow flow speed, which helps in precise filtration tasks. Their strong absorption capacity ensures liquids are well retained during use. Although they have a slightly higher ash content than quantitative filter papers, this is typical for qualitative types and should be considered if you require very low residue. Overall, these filter papers provide reliable performance for your laboratory or chemistry needs.