Best Quantitative Filter Paper of 2026

The Whatman Filter Paper Circles are designed for a variety of laboratory applications, making them an essential tool for your tasks. With a diameter of 42.5 mm and a flow rate of 10.5 seconds per 100 mL, these Grade 1 circles are perfect for clarifying liquids, ensuring you achieve accurate and reliable results. Their versatility extends to the food industry, agriculture, and even air pollution monitoring, catering to diverse needs. Additionally, they are widely used in educational settings, aiding in the teaching of qualitative analytical separations.

The StonyLab Filter Paper is designed with a 94mm diameter, making it ideal for various filtration tasks. Its coarse cellulose material effectively removes particles larger than 20 microns, ensuring clean results for your experiments. You will benefit from a filtration speed of 35 to 70 seconds, allowing for efficient processing without unnecessary delays. Additionally, the low ash content of ≤0.01% means you can trust that the filter will not introduce contaminants into your samples.

The Whatman 1442-150 Filter Paper is made from high-quality cotton fibres produced in dust-controlled rooms, ensuring cleanliness and reliability for your lab work. Its high purity makes it suitable for a wide range of critical applications where contamination must be avoided. With an ash content of just 0.007 percent, you can trust it to leave minimal residue, which is essential for accurate quantitative analysis. This filter paper offers consistent performance, helping you achieve precise and dependable results in your filtering tasks.

The StonyLab Filter Paper is designed for effective filtration with a diameter of 56 mm. It removes particles larger than 10 microns, ensuring your samples remain pure and free from contaminants. With a filtration speed of 70 to 140 seconds, you can quickly process your liquids without unnecessary delays. The ash content is minimal, at just 0.01%, which means you can trust its reliability in quantitative analysis. These filter paper circles are also compatible with StonyLab's Buchner Filtering Funnel for added convenience.

The Whatman Filter Paper Circles are made from high-quality cotton fibres in controlled dust environments, ensuring a clean filtration process. With a high purity level, these filters are ideal for a variety of critical applications, providing you with reliable results every time. The ash content is a mere 0.007 percent, which means you can trust that your samples remain uncontaminated. This makes them a perfect choice for anyone needing accurate and dependable filtration in their work.