Whatman Quantitative Filter Papers, Ashless, Grade 42, 12.5 cm, 100/pk

Description

Particle Retention: >2.5µm.
Porosity: Medium.
Filtration Speed: ASTM, 240 seconds; Herzberg, 1870 seconds.
Surface: Smooth, dense texture.
Applications: Highly retentive, for very fine precipitates. Normal loading; limited wet strength. Laboratory standard for critical gravimetric analysis.