{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-fast-flow-rate-4-7-cm-1004-047","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Fast Flow Rate, 4.7 cm, 1004-047","description":"\u003cp\u003e\u003cstrong\u003eCytiva Whatman Grade 4 Qualitative Filter Paper, Fast Flow Rate, 4.7 cm, 1004-047\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUsed in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring)\u003c\/li\u003e\n\u003cli\u003eOffers excellent retention, 20-25 µm particle retention — captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003eFast filtration — useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003cli\u003eAvailable in variety of sizes and formats (circles, sheets, rolls pre-pleated)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003ctable style=\"width: 85%;\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eUsed when high flow rates in air pollution monitoring are required and collection of fine particles is not critical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e47 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrade\u003c\/td\u003e\n\u003ctd\u003eGrade 4 \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrade Type\u003c\/td\u003e\n\u003ctd\u003eStandard \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCellulose \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Ash Content\u003c\/td\u003e\n\u003ctd\u003e0.06% \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal air flow rate\u003c\/td\u003e\n\u003ctd\u003e4 s\/100 ml\/in\u003csup\u003e2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal basis weight\u003c\/td\u003e\n\u003ctd\u003e92 g\/m\u003csup\u003e2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal thickness\u003c\/td\u003e\n\u003ctd\u003e210 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Particle Retention in Liquid\u003c\/td\u003e\n\u003ctd\u003e25 µm \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Trace Element Levels\u003c\/td\u003e\n\u003ctd\u003eAluminium 3.6 µg\/g Antimony \u0026lt;0.5 µg\/g Arsenic \u0026lt;0.5 µg\/g Barium \u0026lt;0.5 µg\/g Boron \u0026lt;1 µg\/g Calcium 27.5 µg\/g Chromium 1 µg\/g Copper 0.9 µg\/g Iron 13.7 µg\/g Lead \u0026lt;0.5 µg\/g Magnesium 21 µg\/g Manganese \u0026lt;0.5 µg\/g Mercury \u0026lt;0.5 µg\/g Potassium 6.2 µg\/g Silicon 8.8 µg\/g Sodium 32.3 µg\/g Zinc 58.3 µg\/g \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical water flow rate at 45 psi (3.1 bar)\u003c\/td\u003e\n\u003ctd\u003e247 mL\/min \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110950109499,"sku":"90-7494-15-PK","price":18.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-15.png?v=1785309703","url":"https:\/\/preiser.com\/products\/cytiva-whatman-grade-4-qualitative-filter-paper-fast-flow-rate-4-7-cm-1004-047","provider":"Preiser Scientific","version":"1.0","type":"link"}