Ashless Hardened Filter Paper for Quantitative Analysis

Ashless hardened Filter papers are acid hardened which reduce the ash content to an extremely low level. A maximum ash content of <0.006% is attained, which means that no contaminants are introduced when filtering. Thanks to the hardened texture, they are often used when the analyst must recover the precipitates retained on the filter surface.

Grades

• F2141 GRADE: Fast filtration. Preferably used for the filtration of coarse flocculent and bulky precipitates.
• F2140 GRADE: Medium filtration. Extremely strong and pure. Recommended for filtering medium-sized precipitates.
• F2142 GRADE: Slow filtration. High retention and slow flow rate. High chemical resistance.