{"title":"Grades 40\/41-Whatman","description":"\u003cp\u003eGrades 40\/41-Whatman\u003c\/p\u003e","products":[{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-4-25-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 4.25 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":51110951551291,"sku":"90-7501-01-PK","price":46.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-01.png?v=1784705321"},{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-5-5-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 5.5 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":51110951584059,"sku":"90-7501-02-PK","price":50.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-02_479d84fb-8de5-4a5e-8c27-1effaa8ab21a.png?v=1784705322"},{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-7-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 7 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":51110951682363,"sku":"90-7501-03-PK","price":52.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-03.png?v=1784705324"},{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-9-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 9 cm","description":"\u003cp\u003e\u003cstrong\u003eCytiva® Whatman® Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 9 cm, 1440-090\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-purity, general-purpose papers for quantitative analysis\u003c\/li\u003e\n\u003cli\u003eSuitable for a variety of analytical filtration applications\u003c\/li\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\u003cli\u003eWhatman® offers a wide range of ashless filter paper for gravimetric analysis\u003c\/li\u003e\n\u003cli\u003eUse hardened ashless grades if analysis involves strong acid\/alkali suspensions\u003c\/li\u003e\n\u003cli\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\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\n\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","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110951715131,"sku":"90-7501-04-PK","price":73.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-04.png?v=1784923563"},{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-11-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 11 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":51110951747899,"sku":"90-7501-05-PK","price":87.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-05_9905875e-6bfa-436e-b78f-553ec2955361.png?v=1784705327"},{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-12-5-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 12.5 cm Diameter, 100\/PK, Cytiva, 1440-125","description":"\u003cp\u003e\u003cstrong\u003eCytiva® Whatman® Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 12.5 cm Diameter, 1440-125\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-purity, general-purpose papers for quantitative analysis\u003c\/li\u003e\n\u003cli\u003eGrade 40 filters are suitable for variety of analytical filtration applications\u003c\/li\u003e\n\u003cli\u003eContain 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\u003cli\u003eCytiva offers wide range of Whatman ashless and hardened ashless filter papers for gravimetric analysis\u003c\/li\u003e\n\u003cli\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\u003c\/li\u003e\n\u003cli\u003eNominal thickness: 210 µm\u003c\/li\u003e\n\u003cli\u003eNominal basis weight: 95 g\/m\u003csup\u003e2\u003c\/sup\u003e\n\u003c\/li\u003e\n\u003cli\u003eAlpha minimum cellulose content: ≥98%\u003c\/li\u003e\n\u003cli\u003eTrace element contents: Aluminium 2.5 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 8.3 µg\/g Chromium 1.5 µg\/g Copper 2 µg\/g Iron 12 µg\/g Lead \u0026lt;0.5 µg\/g Magnesium 4 µg\/g Manganese \u0026lt;0.5 µg\/g Mercury \u0026lt;0.5 µg\/g Potassium 2.3 µg\/g Silicon 6.2 µg\/g Sodium 16.8 µg\/g Zinc 64.5 µg\/g \u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eApplications:\u003c\/strong\u003e\u003c\/p\u003e\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 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 atmosphere\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cytiva","offers":[{"title":"PK (1)","offer_id":51110951813435,"sku":"90-7501-06-PK","price":99.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-06_800450d4-0334-41f6-a6ef-51b5f4e5b913.png?v=1785296006"},{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-15-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 15 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":51110951878971,"sku":"90-7501-07-PK","price":130.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-07.png?v=1784777688"},{"product_id":"whatman-grade-40-quantitative-ashless-filter-paper-medium-fine-precipitates-retained-18-5-cm","title":"Whatman Grade 40 Quantitative Ashless Filter Paper, Medium Fine Precipitates Retained, 18.5 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":51110951911739,"sku":"90-7501-08-PK","price":191.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-08.png?v=1785296008"},{"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"},{"product_id":"grade-cfp40-cellulose-filter-paper-cut-11-0-cm-diameter-100-pk-quantitative-grade","title":"Grade CFP40 Cellulose Filter Paper, Cut 11.0 cm Diameter 100\/PK Quantitative Grade","description":"\u003cp\u003e\u003cstrong\u003eI.W. Tremont Grade CFP40 Cellulose Filter Paper, Cut 11.0 cm Diameter 100\/PK Quantitative Grade, CFP40-110\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDemonstrating medium retention and flow rates, this media is widely used in many general quantitative procedures in both liquid and gas\u003c\/li\u003e\n\u003cli\u003eThese procedures include: standard environmental test procedures such as soil sample analysis, the collection of trace elements, and radionuclides in air samples\u003c\/li\u003e\n\u003cli\u003eAlso used in liquid food tests for determination of sediments, primary analysis of cements and slurries, and sample preparation prior to spectrophotometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"border-style: solid; margin-left: auto; margin-right: auto;\" border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 103px;\"\u003eFilter Media\u003c\/td\u003e\n\u003ctd style=\"width: 139px;\"\u003eCFP40 Quantitative\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 103px;\"\u003eFurnish\/Finish\u003c\/td\u003e\n\u003ctd style=\"width: 139px;\"\u003eCotton\/Ashless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 103px;\"\u003eRetention\u003c\/td\u003e\n\u003ctd style=\"width: 139px;\"\u003e8 µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 103px;\"\u003eFlow Rate\u003c\/td\u003e\n\u003ctd style=\"width: 139px;\"\u003eMedium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 103px;\"\u003eAsh Content\u003c\/td\u003e\n\u003ctd style=\"width: 139px;\"\u003e\u0026lt; 0.01%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 103px;\"\u003eBasis Weight\u003c\/td\u003e\n\u003ctd style=\"width: 139px;\"\u003e85 g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 103px;\"\u003eThickness\u003c\/td\u003e\n\u003ctd style=\"width: 139px;\"\u003e0.200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"I W Tremont","offers":[{"title":"PK (1)","offer_id":51110952304955,"sku":"90-7501-25-PK","price":24.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7501-25.png?v=1784923566"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-4-25-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 4.25 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":51110952337723,"sku":"90-7502-01-PK","price":37.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-01.png?v=1784705344"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-5-5-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 5.5 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":51110952436027,"sku":"90-7502-02-PK","price":41.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-02.png?v=1784705345"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-7-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 7 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":51110952468795,"sku":"90-7502-03-PK","price":53.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-03_e195a846-9040-4ba2-8143-bcfd4d0a3b89.png?v=1784705347"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-9-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 9 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":51110952567099,"sku":"90-7502-04-PK","price":69.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-04_51c2bfa8-bccf-4d7e-ab34-e15d467132a7.png?v=1784705348"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-11-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 11 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":51110952599867,"sku":"90-7502-05-PK","price":83.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-05.png?v=1784705350"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-12-5-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 12.5 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":51110952632635,"sku":"90-7502-06-PK","price":96.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-06.png?v=1784705351"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-15-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 15 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":51110952665403,"sku":"90-7502-07-PK","price":130.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-07_e348e168-a4f8-4a49-b098-c1763037f90a.png?v=1784705353"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-18-5-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 18.5 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":51110952730939,"sku":"90-7502-08-PK","price":191.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-08.png?v=1784705354"},{"product_id":"whatman-grade-41-quantitative-ashless-filter-paper-coarse-precipitates-retained-24-cm","title":"Whatman Grade 41 Quantitative Ashless Filter Paper, Coarse Precipitates Retained, 24 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":51110952796475,"sku":"90-7502-09-PK","price":305.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7502-09_7afbfa02-3528-493e-9d9e-d04781c879df.png?v=1784705356"},{"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"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/collections\/imgi_2_802070801.jpg?v=1762207399","url":"https:\/\/preiser.com\/collections\/grades-40-41-whatman.oembed","provider":"Preiser Scientific","version":"1.0","type":"link"}