{"product_id":"whatman-quantitative-filter-papers-ashless-grade-42","title":"Whatman Quantitative Filter Papers, Ashless, Grade 42","description":"\u003cdiv\u003e\n\u003cp\u003eOur high-purity Whatman™ ashless Grade 42 filter papers have the finest retention of all Whatman™ ashless filter paper grades and are  designed for gravimetric analysis and sample preparation for instrumental analysis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cul class=\"cui-list cui-list--bullet\"\u003e\n\u003cli\u003eAshless: 0.007% ash maximum\u003c\/li\u003e\n\u003cli\u003eFine (2.5 μm) nominal particle retention rating, eliminates large particles that might otherwise interfere with sensitive instrumentation\u003c\/li\u003e\n\u003cli\u003eHerzberg filtration speed of 1870 s\u003c\/li\u003e\n\u003cli\u003eCommonly used as a calcium carbonate filter\u003c\/li\u003e\n\u003cli\u003eParticularly suitable for gravimetric analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cp\u003eOther typical precipitates for gravimetric analysis include barium sulfate and metastannic acid for use in glazes, coatings, and pigments. The high purity of Cytiva's Grade 42 filters also makes them suitable for processes that require ashing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"-spacing--bottom-24\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhatman ashless\u003cspan class=\"z-label\" id=\"hXgVtd0\"\u003e™\u003c\/span\u003e quantitative filter papers are high-purity filters that 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. Cytiva's high-purity Whatman\u003cspan class=\"z-label\" id=\"hXgVtd0\"\u003e™\u003c\/span\u003e ashless filter papers are suited for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEnvironmental analysis: soil filtration analysis, when separating solid matter from aqueous extracts\u003c\/li\u003e\n\u003cli\u003eRetention of small particles\u003c\/li\u003e\n\u003cli\u003eCollection of trace elements and radionuclides from the atmosphere\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"DSCBalances","offers":[{"title":"1442-042","offer_id":36822575513750,"sku":"1442-042","price":27.47,"currency_code":"USD","in_stock":true},{"title":"1442-047","offer_id":36822578659478,"sku":"1442-047","price":35.61,"currency_code":"USD","in_stock":true},{"title":"1442-055","offer_id":36822581477526,"sku":"1442-055","price":32.36,"currency_code":"USD","in_stock":true},{"title":"1442-070","offer_id":36822582231190,"sku":"1442-070","price":38.73,"currency_code":"USD","in_stock":true},{"title":"1442-090","offer_id":36822582362262,"sku":"1442-090","price":51.67,"currency_code":"USD","in_stock":true},{"title":"1442-110","offer_id":36822576595094,"sku":"1442-110","price":63.12,"currency_code":"USD","in_stock":true},{"title":"1442-125","offer_id":36822577184918,"sku":"1442-125","price":72.81,"currency_code":"USD","in_stock":true},{"title":"1442-150","offer_id":36822577348758,"sku":"1442-150","price":92.15,"currency_code":"USD","in_stock":true},{"title":"1442-185","offer_id":36822577610902,"sku":"1442-185","price":135.73,"currency_code":"USD","in_stock":true},{"title":"1442-240","offer_id":36822578004118,"sku":"1442-240","price":217.22,"currency_code":"USD","in_stock":true},{"title":"1442-320","offer_id":36822578266262,"sku":"1442-320","price":446.16,"currency_code":"USD","in_stock":true},{"title":"1442-6551","offer_id":36825863717014,"sku":"1442-6551","price":88.87,"currency_code":"USD","in_stock":true},{"title":"1442-917","offer_id":36822576365718,"sku":"1442-917","price":922.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0489\/6990\/8374\/products\/3960_10061.jpg?v=1634971591","url":"https:\/\/www.dscbalances.com\/products\/whatman-quantitative-filter-papers-ashless-grade-42","provider":"DSCBalances","version":"1.0","type":"link"}