Axiva Sichem Biotech provide qualitative filter paper and ashless filter paper. We are leading manufacturer, supplier and exporter of qualitative filter paper in worldwide. The 13 1/2 in x 24 in Fry Filter Paper from Pitco is available from Tundra Restaurant Supply. Filter Paper GE Healthcare Whatman™ Qualitative Filter Paper: Grade 1 Circles Covers a wide range of laboratory applications and is frequently used for clarifying liquids. May 04, 2017 · It refers to a measurement of paper density in Grams per Square Meter. Higher the value, higher will be the thickness of the paper. In fact if the thickness is higher than 130 gsm, it can be referred as paper board. These cellulose filters (98% alpha cellulose content min.) are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.Made of pure cellulose treated with hydrochloric and hydrofluoric acid, filter paper is quantitative paper ... Filter paper is a semi-permeable paper barrier placed perpendicular to a liquid or air flow. It is used to separate fine substances from liquids or air. It is used in science labs to remove solids from liquids.