Product Code: F11440

Quantitative filter papers have high wet strength and chemical resistance. They are acid-hardened, reducing ash to an extremely low level. Their hard surface makes them suitable for a wide variety of critical analytical filtration processes.

GRADE 40:

Particle retention: 8 µm

Ash: ≤0.007%

Ashless filter paper has a medium speed and retention capacity. Typical applications include gravimetric analysis of various components in cements, clays, iron, and steel products; as a primary filter for the separation of solids from aqueous extracts in general soil analyses; for the quantitative determination of sediments in milk; and as a pure analytical-grade clean-up filter for solutions prior to AA spectrophotometry. They are also used as a high-purity filter for the collection of trace elements and radioisotopes from the atmosphere.