Cytiva's Whatman™ Grade 42 Quantitative Filter Paper, Ashless
Cytiva's Whatman™ Grade 42 is the world standard for critical gravimetric analysis with the finest particle retention of all Cytiva's Whatman™ cellulose filter papers. Typical analytical precipitates include barium sulfate metastannic acid and finely precipitated calcium carbonate. Retention: 2.5µm.