Grade 43 Quantitative Filter Paper

Photo of Whatman Grade 43 Quantitative Filter Paper

Whatman No. 43. Intermediate in retention (16 µm) between Grade 40 and 41, and twice as fast as Grade 40. Typical applications include foodstuffs analysis; soil analysis; particle collection in air pollution monitoring for subsequent analysis by XRF techniques; and inorganic analysis in the construction, mining and steel industries. 100 circles/box.