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Grade 589/2 Quantitative Filter Paper Ashless (Ash 0.01%), circle, 110 mm These are very pure filters suitable for a wide range of critical analytical filtration procedures. Whatman quantitative filters from GE Healthcare are designed for gravimetric analysis and the preparation of samples for instrumental analysis. They are available in three formats designed to meet specific needs. ''White Ribbon Filter'': Ashless standard filter paper for medium fine precipitates (class 2b acc. to DIN 53 135) offering medium filtration speed. Applied in a variety of routine methods in quantitative analysis (e.g., determination of the sand content in foodstuffs; determination of the grade of flour; or analysis of aqueous suspensions in the paper industry). Also available prepleated as Grade 589/2 ˝. Grade 589/2: 4–12 µm

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