{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-32-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 32 cm","description":"\u003cdiv class=\"col-xs-12\"\u003e\n\u003cp id=\"overview\" class=\"lead-paragraph\"\u003eCytiva Whatman Grade 41 environmental pollution papers are among the fastest filter papers in the Whatman ashless range. This gravimetric filter is well suited for quantitative analysis of soil and air.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExtremely low ash content (0.007% ash maximum)\u003c\/li\u003e\n\u003cli\u003e20 µm nominal particle retention rating\u003c\/li\u003e\n\u003cli\u003eFast filtration speed (Herzberg 54 s)\u003c\/li\u003e\n\u003cli\u003eCommonly used for routine air pollution analysis and soil pollution analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eAside from Grade 41 environmental pollution papers, Whatman quantitative paper comes in a variety of particle retentions, filtration speeds, and filter thicknesses to provide you with the appropriate filter for your precipitate. Also see our hardened ashless grades for analysis requiring the use of strong acids or bases.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eFast ashless paper for pollution analysis\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhatman Grade 41 filters from Whatman are suitable for quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates.\u003c\/p\u003e\n\u003cp\u003eGrade 41 filters are also commonly used in preparing solid environmental samples (e.g., soils, sludges) for metals analysis after nitric acid digestion. Grade 41 is available in a convenient, disposable, 47 mm filter funnel with a 250 ml capacity. The 47 mm diameter filter can be easily removed for further analysis or culturing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110952829243,"sku":"90-7502-11-PK","price":544.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-11.png?v=1784705357","url":"https:\/\/preiser.com\/products\/whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-32-cm","provider":"Preiser Scientific","version":"1.0","type":"link"}