Classic ashless general-purpose filter paper. Equivalent to white ribbon. Medium speed and medium retention. Typical applications include gravimetric analysis of numerous components, quantitative determinations of sediment and high purity clean-up procedures. - Filtration speed acc. to DIN 53137: 27 s. - Thickness 0.2 mm. - Weight: 85 g / m². - Ash-content: < 0.01 %. Classic ashless general-purpose filter paper. Equivalent to white ribbon. Medium speed and medium retention. Typical applications include gravimetric analysis of numerous components, quantitative determinations of sediment and high purity clean-up procedures. - Filtration speed acc. to DIN 53137: 27 s. - Thickness 0.2 mm. - Weight: 85 g / m². - Ash-content: < 0.01 %.