{"product_id":"whatman-quantitative-filter-papers-hardened-ashless-grade-540","title":"Whatman Quantitative Filter Papers, Hardened Ashless, Grade 540","description":"\u003cdiv\u003eCytiva's Whatman Grade 540 is a high-purity, acid-treated cellulose lab filter paper. Mechanically strong Grade 540 is well suited for quantitative or gravimetric analysis of strongly acidic or alkaline samples.\u003c\/div\u003e\n\u003cul class=\"cui-list cui-list--bullet\"\u003e\n\u003cli\u003eAcid-treated for high wet-strength\u003c\/li\u003e\n\u003cli\u003eExtremely low ash content (0.006% ash maximum)\u003c\/li\u003e\n\u003cli\u003eNominal particle retention of 8 µm\u003c\/li\u003e\n\u003cli\u003eMedium flow rate (Herzberg filtration speed 200 s)\u003c\/li\u003e\n\u003cli\u003eHigh chemical resistance to strong acid and alkali suspensions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cp\u003eCytiva's business offers hardened ashless filter paper for a variety of precipitate sizes. Along with general filtration Grade 540, the range includes \u003ca href=\"https:\/\/www.cytivalifesciences.com\/shop\/whatman-laboratory-filtration\/cellulose-filter-papers\/quantitative-hardened-ashless-filter-paper\/whatman-quantitative-filter-papers-hardened-ashless-grade-542-p-06102\"\u003eGrade 542\u003c\/a\u003e for retention of fine precipitates and \u003ca href=\"https:\/\/www.cytivalifesciences.com\/shop\/whatman-laboratory-filtration\/cellulose-filter-papers\/quantitative-hardened-ashless-filter-paper\/whatman-quantitative-filter-papers-hardened-ashless-grade-541-p-06103\"\u003eGrade 541\u003c\/a\u003e for fast filtration. All three grades are designed for use in gravimetric analysis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"-spacing--bottom-24\"\u003e\n\u003ch2\u003eGravimetric analysis of acid and alkali suspensions\u003c\/h2\u003e\n\u003cp\u003eCytiva's hardened, ashless Grade 540 lab filter paper is frequently used as a gravimetric filter during analysis of metals in acidic or alkaline solutions and in the collection of hydroxides. The acid-treated surface prevents tearing during filtration and allows the user to scrape precipitates from the paper.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"DSCBalances","offers":[{"title":"1540-042","offer_id":36822593241238,"sku":"1540-042","price":29.04,"currency_code":"USD","in_stock":true},{"title":"1540-055","offer_id":36822596223126,"sku":"1540-055","price":32.37,"currency_code":"USD","in_stock":true},{"title":"1540-090","offer_id":36822596354198,"sku":"1540-090","price":53.44,"currency_code":"USD","in_stock":true},{"title":"1540-110","offer_id":36822593372310,"sku":"1540-110","price":64.67,"currency_code":"USD","in_stock":true},{"title":"1540-125","offer_id":36822593929366,"sku":"1540-125","price":74.36,"currency_code":"USD","in_stock":true},{"title":"1540-150","offer_id":36822594060438,"sku":"1540-150","price":105.1,"currency_code":"USD","in_stock":true},{"title":"1540-185","offer_id":36822594617494,"sku":"1540-185","price":155.26,"currency_code":"USD","in_stock":true},{"title":"1540-240","offer_id":36822595862678,"sku":"1540-240","price":237.95,"currency_code":"USD","in_stock":true},{"title":"1540-320","offer_id":36822596092054,"sku":"1540-320","price":505.65,"currency_code":"USD","in_stock":true},{"title":"1540-321","offer_id":36822595567766,"sku":"1540-321","price":29.04,"currency_code":"USD","in_stock":true},{"title":"1540-324","offer_id":36822595797142,"sku":"1540-324","price":29.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0489\/6990\/8374\/products\/3963_10061.jpg?v=1634981994","url":"https:\/\/www.dscbalances.com\/products\/whatman-quantitative-filter-papers-hardened-ashless-grade-540","provider":"DSCBalances","version":"1.0","type":"link"}