Qualitative Filter Papers

Grade 303, medium, 6-10ɥ, , Dia 125 mm., 100 pcs. (Whatman No.2)
Grade 304, fast, thin, 10-12ɥ, Dia 90 mm., 100 pcs. (Whatman No.1)
Grade 304, fast, thin, 10-12ɥ, Dia 110 mm., 100 pcs. (Whatman No.1)
Grade 304, fast, thin, 10-12ɥ, Dia 125 mm., 100 pcs. (Whatman No.1)
Grade 304, fast, thin, 10-12ɥ, Dia 150 mm., 100 pcs. (Whatman No.1)