Grade 42 Quantitative Filter Paper

Photo of Whatman Grade 42 Quantitative Filter Paper

Whatman No. 42 is a world standard for critical gravimetric analysis with the finest particle retention (2.5 µm) of all Whatman cellulose filter papers. Typical analytical precipitates include barium sulfate, metastannic acid and finely precipitated calcium carbonate. 100 per box.