The Whatman grade GF 8 glass microfiber filter is manufactured with an inorganic binder. Good retention for filtration ofcoarse particles. Frequently used in environmental analysis, in the determination of PCB, DDE, DDT, furans and dioxins in the air and pollution measurements in industrial, urban and populated areas. Additional applications include cement factories, iron and steel industry, dust measurements at the workplace, determination of the dust fraction in technical gases, and testing the effectiveness of dust-collecting. Grade: GF 8, circle. Diameter: 90mm. 100/Pack. Whatman #: 10370105.