Ahlstrom Filtration Grade 74 Ashless Quantitative Filter Paper, 18.5 cm dia

Quantitative Filter Paper, 18.5 cm dia, Cotton, Grade 74, Ashless Grade Type, Circle Format, 0.2 mm Thickness, 2 µm Particle Retention in Liquid, 95 g/m2 Nominal Basis Weight, 229 sec/100 ml (Herzberg) Filtration Speed

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