Whatman 1442-150 Ashless Quantitative Filter Paper, 15.0cm Diameter, 2.5 Micron, Grade 42 (Pack of 100)
A world standard for critical gravimetric analysis with the finest particle retention of all Whatman cellulose filter papers. Typical analytical precipitates include barium sulphate, metastannic acid and finely precipitated calcium carbonate. Retention: 2.5µm. Diameter: 15.0cm. 100/Pack. Whatman #: 1442-150.