What Is Filter Paper Used for?

Filter paper is a kind of paper that is used in many industries now. And this kind of paper also plays a role in filtering. As we know the filter paper can be divided into qualitative filter paper and quantitative filter paper. Qualitative filter paper is a filter paper commonly used in laboratories to filter mat beakers for qualitative analysis. Quantitative filter paper is also called ashless filter paper. High-quality quantitative filter paper can replace non-phosphorus filter paper.


Qualitative BIO-1 filter paper
·Particle retention – 11um
·Flow rate – medium speed
·Specifications – 10mm to 500mm diameter discs and 460*570mm rectangles


a. Liquid Filtration
b. Qualitative separation
c. Soil Analysis and Seed Testing
d. Separation of solid food from liquid
e. Air pollution monitoring
f. Test gas after soaking with reagent

Qualitative BIO-2 filter paper
·Particle retention – 8um
·Flow rate – medium speed


a. Monitoring of specific substances in the air
b. Soil test
c. Preserving soil nutrients in plant cultivation experiments
d. Determination of vitamin C in food, histidine in canned fish, full-fat content in meat collection, and monitoring of chromic acid mist around the spray bath
e. Textile dye quality inspection

lab grade filter paper

Qualitative BIO-3 filter paper: high load capacity and high wet strength
·Particle retention – 6um
·Flow rate – medium speed


a. Buchner funnel filtration
b. The carrier of the sample, such as the collection of blood samples before separation
c. Macromolecular radioanalysis by scintillation counting
d. Determination of metal and organic wastes in water flows (from rivers, lakes, sewers, polycyclic hydrocarbons in air)

Qualitative BIO-4 filter paper: coarse particle retention and gel filtration
·Particle retention – 20-25um
·Flow rate – fast


a. Monitoring air pollution with reagent immersion
b. Rapid routine purification filtration of biological fluids or organic extracts – such as fats
c. Determination of volatile acids in oils and fats, maltose in flour, sodium citrate in pharmaceuticals

filter paper priceQualitative Filter Paper BIO-5: Qualitative Filtration of the Finest Particles
·Retention -2.5um
·Flow rate – slow


a. Clarify turbid suspensions and water
b. Soil analysis

Wet Strengthened BIO-91 filter paper: wrinkled side
·Particle retention -> 10um
·Flow rate – medium speed
·Application: Sugar Analysis in Glycan

Wet Strengthened Filter Paper BIO-113: Wrinkled Surface
·Particle retention – 30um
·Flow rate – fast


a. Coarse particle or gel precipitation filtration
b. Vacuum filtration of viscous liquids

Quantitative BIO-40 filter paper: medium particle retention
·Particle retention: 8um
·Flow rate: medium speed


a. Specific gravity analysis of cement, clay/iron, and steel product components
b. Solids are separated from the aqueous extract during routine soil analysis
c. Specific gravity analysis of milk deposits
d. Clarification filtration of solution before atomic spectroscopy detection
e. Collection of trace elements and radionuclides from the atmosphere

Quantitative BIO-41 filter paper:
·Particle retention: 20-25um
·Flow rate: fast


a. Filtration of coarse particles and gel precipitates
b. Rapid determination of gas compounds by soaking paper strips during specific gravity analysis of air pollution

Quantitative BIO-42 filter paper: fine particle retention
·Particle retention: 2.5um
·Flow rate: slow


– Specific gravity analysis of precipitates such as barium sulfate, stannic acid, and finely precipitated calcium carbonate

Quantitative BIO-43 filter paper
·Particle retention: 16um
·Flow rate: medium speed


a. Food Analysis
b. Soil analysis
c. Particle collection in air pollution monitoring in preparation for subsequent X-ray fluorescence detection
d. Inorganic analysis for construction, mining, and steel industries

Quantitative BIO-44 filter paper
·Particle retention: 3um
·Flow rate: slow
·Application: Retention of very fine particles