Quantitative Filter Papers -Low Ash Filter Paper

Quantitative filter papers are laboratory filtration media designed for precise analytical work — especially where the mass of residue or the content of an analyte is measured after filtration.

Key properties:

• Known and reproducible filtration characteristics

• Low contamination from the paper itself

• Consistent fiber structure for predictable flow rates and particle retention

Low ash paper has reduced ash content compared to regular filter paper, but not as low as ashless grades.

 Characteristics

• Some inorganic fillers may be present to adjust strength/flow

• Ash content is low, but higher than ashless

• Typically < ~0.3%–0.5% ash depending on grade