18.5 cm Fluted Filter Paper, Pre-Pleated (Folded), Qualitative Grade 4 - ZENPORE Fast Flow 185 mm (100 Discs)

Description

Size:18.5 cm diameter GRADE 4 V FLUTED Qualitative Filter PaperEquivalent to Whatman grade 4 V, this very fast laboratory filter paper is used for coarse filtration when you need to separate a solid or precipitate from the filtrate.Made from high alpha-cellulose cotton, this standard lab filter is not intended for ashing.APPLICATIONSscience : Routine clean-up of insoluble liquids such as biological fluids or organic extracts in labsfood : Determination Sodium Chloride in foodstuffswine : Filtration of mustsmetalurgy : Determination of silicon impurities in pig iron and steelenvironment : Fast flowing air and exhausts monitoring when the collection of fine particles is not critical.COARSE RETENTIONRetains coarse particles and gelatinous precipitates like:Metal hydroxides (Al, Cr, Fe, Mg) , Be OxideInsoluble iron and ore, precipitated SilicatesCulture media, and colloidal sedimentsSPECSpaper : pure cotton celluloseflow : fastretention : 20~25 μm (coarse)speed : 15~20 s (10ml DIN 53137)size : ⌀ 185 mmthickness : 140 μmweight : 86 g/m²ash : 0.1%qty : 100 discsPRE-PLEATEDThose Prepleated Fluted Filters saves filtration and folding time thanks to their increased surface area and loading capacity.Provides faster flow than simple folding while maintaining similar grade characteristics.Suitable for gravity filtration in standard funnels, not vacuum.EQUIVALENCE & SIZESee the cross-reference table and size diagrams in the photos to choose the appropriate reference and diameter of your circles.