{"title":"Grade 4-Whatman","description":"\u003cp\u003eGrade 4-Whatman\u003c\/p\u003e","products":[{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-4-25-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 4.25 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949519675,"sku":"90-7494-01-PK","price":16.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-01.png?v=1784705269"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-5-5-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 5.5 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949552443,"sku":"90-7494-02-PK","price":21.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-02.png?v=1784705269"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-7-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 7 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949650747,"sku":"90-7494-03-PK","price":21.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-03.png?v=1784705271"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-9-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 9 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949683515,"sku":"90-7494-04-PK","price":25.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-04.png?v=1784705272"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-11-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 11 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949716283,"sku":"90-7494-05-PK","price":32.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-05.png?v=1784705274"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-12-5-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 12.5 cm","description":"\u003cp\u003eCytivaWhatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949749051,"sku":"90-7494-06-PK","price":42.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-06_de5ba460-e1e6-498d-a706-5ddf02934a1a.png?v=1784923561"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-15-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 15 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949814587,"sku":"90-7494-07-PK","price":53.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-07_583ee55f-86a1-45d1-8c2a-ad50b24f5373.png?v=1784705277"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-18-5-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 18.5 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949880123,"sku":"90-7494-08-PK","price":79.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-08.png?v=1784705279"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-24-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 24 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949912891,"sku":"90-7494-09-PK","price":134.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-09.png?v=1784705280"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-27-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 27 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949945659,"sku":"90-7494-10-PK","price":176.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-10.png?v=1784705281"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-32-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 32 cm","description":"\u003cp\u003eCytivaWhatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110949978427,"sku":"90-7494-11-PK","price":253.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-11.png?v=1784705283"},{"product_id":"cytiva-whatman-grade-4-qualitative-filter-paper-coarse-precipitates-retained-40-cm","title":"Cytiva Whatman Grade 4 Qualitative Filter Paper, Coarse Precipitates Retained, 40 cm","description":"\u003cp\u003eCytiva Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"rte-wrapper\"\u003e\n\u003cp\u003eThese cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring).\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"read-more-expandable\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtremely high flow rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent retention:\u003c\/strong\u003e captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast filtration:\u003c\/strong\u003e useful for routine clean-up of biological fluids or organic extracts during analysis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eGrade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters.\u003c\/p\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":51110950076731,"sku":"90-7494-13-PK","price":376.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7494-13.png?v=1784705285"},{"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=1784705286"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/collections\/imgi_5_138051104.jpg?v=1762198801","url":"https:\/\/preiser.com\/collections\/grade-4-whatman.oembed","provider":"Preiser Scientific","version":"1.0","type":"link"}