{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-24-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 24 cm","description":"\u003cp id=\"overview\" class=\"lead-paragraph\"\u003eCytiva Whatman Grade 40 high-purity filters are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.\u003c\/p\u003e\n\u003cp class=\"lead-paragraph\"\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-purity filters contain 0.007% maximum ash content\u003c\/li\u003e\n\u003cli\u003eMedium nominal particle retention rating of 8 µm\u003c\/li\u003e\n\u003cli\u003eMedium filtration speed (Herzberg 340 s)\u003c\/li\u003e\n\u003cli\u003eParticularly useful for gravimetric analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eWe offer a range of Whatman ashless filter paper for your gravimetric analysis needs. See our other ashless grades to find the right filter for your sample, or use our hardened ashless grades if your analysis involves strong acid\/alkali suspensions.\u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHigh-purity filters support accurate analysis in applications sensitive to very low levels of background contamination and in gravimetric analysis where ash content might affect weight measurements of combusted samples. High-purity Whatman Grade 40 ashless paper is suited to:\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSoil analysis, when separating solid matter from aqueous extracts\u003c\/li\u003e\n\u003cli\u003eQuantitative determination of milk sediment\u003c\/li\u003e\n\u003cli\u003eUse as a clean-up filter for solutions prior to atomic absorption (AA) spectrometry\u003c\/li\u003e\n\u003cli\u003eAnalysis of constituent components in cements, clays, iron, and steel products\u003c\/li\u003e\n\u003cli\u003eCollection of trace elements and radionuclides from the atmosphere\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110951944507,"sku":"90-7501-09-PK","price":305.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-09.png?v=1784705333","url":"https:\/\/preiser.com\/products\/whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-24-cm","provider":"Preiser Scientific","version":"1.0","type":"link"}