Grade 15 filter paper from Camlab Filters, equivalent to grade 42, for very slow filtering. Quantitative filter paper, 2-3µm particle retention, diameter 185mm
Fine pore filter paper used for extremely difficult filtration conditions such as cold barium sulphate, metstannic acid, cuprous oxide. Our ashless quantitative filter papers are made with 100% cotton linters. As quantitative analysis requires a high purity paper these are washed out with acid and finally cleaned with demineralised water. The ash content is 0.007%
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