Filter papers - a guide
determination of the sand content in foodstuffs acc. to Section 35 LMBG*; determination of the grade of flour; or analysis of aqueous suspensions in the paper industry. Grade 589/3: 2 μm ‘Blue Ribbon Filter’ – ashless standard filter paper for very fine precipitates (Class 2d acc. to DIN 53 135). Slow filter paper with
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