Whatman 1003-070 Filter Circles, 70mm Dia, Grade 3, 100/pk (PN:1003-070)

Whatman Grade 3 filter papers are widely used for routine qualitative filtration in laboratory settings. They are suitable for separating precipitates, clarifying solutions, and preparing samples for chemical or environmental analysis.

Grade 3 filter paper has a nominal particle retention of about 6 µm, allowing it to capture medium-to-fine particles while still maintaining a relatively fast filtration rate.

Whatman Grade 3 is approximately twice as thick as Grade 1 filter paper, giving it higher wet strength and better particle-holding capacity. This allows it to retain more precipitate without clogging during filtration.

Yes. The extra thickness and mechanical strength of Grade 3 filter paper make it well suited for vacuum filtration using Büchner funnels, where durability and consistent flow are important.

Grade 3 filter circles are manufactured from high-quality cellulose fibers, providing consistent filtration performance and reliable results in qualitative laboratory applications.