{"product_id":"qualitative-filter-paper-grade-642-4-25-cm-2-0-micron-100-pk-ahlstrom-6420-0425","title":"Qualitative Filter Paper, Grade 642, 4.25 cm, 2.0 micron, 100\/PK, Ahlstrom, 6420-0425","description":"\u003cp\u003e\u003cstrong\u003eAhlstrom-Munksjö® Qualitative Filter Paper, Grade 642, 4.25 cm, 2.0 micron, 100\/PK, 6420-0425\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e2 μm, Medium Speed\u003c\/li\u003e \u003cli\u003eHas finer particle retention than Grade 601 but with slightly lower filtration speed\u003c\/li\u003e \u003cli\u003eHigher absorption than Grade 601\u003c\/li\u003e \u003cli\u003eUsed in general laboratory applications to retain particles above 2 μm in size\u003c\/li\u003e \u003cli\u003eAlso found in agricultural and environmental laboratories for plant growth trials, soil testing, and air analysis for monitoring specific contaminants and in filtration of organic and sulfide precipitates.\u003c\/li\u003e \u003cli\u003eNon wet-strengthened\u003c\/li\u003e \u003cli\u003eSuitable for quadrant folded or gravity flow applications\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e \u003ctable style=\"width:\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003eClass\u003c\/td\u003e \u003ctd\u003eQualitative\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSpeed\u003c\/td\u003e \u003ctd\u003eMedium\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eGrade\u003c\/td\u003e \u003ctd\u003e642\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eSize\u003c\/td\u003e \u003ctd\u003e4.25 cm diameter\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eRetention\u003c\/td\u003e \u003ctd\u003e2.0 µm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFiltration Speed Herzberg\u003c\/td\u003e \u003ctd\u003e229 seconds\/100 mL\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eFiltration Speed Rapidity\u003c\/td\u003e \u003ctd\u003e30 mL\/minute\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eLoading Capacity\u003c\/td\u003e \u003ctd\u003eMedium\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eEquivilent Grade\u003c\/td\u003e \u003ctd\u003eWhatman Grade 2\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eMaterial\u003c\/td\u003e \u003ctd\u003e\u0026gt; 95% super refined α-cellulose and linter fibers\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e","brand":"Ahlstrom","offers":[{"title":"PK (1)","offer_id":51110946308411,"sku":"90-7481-08-PK","price":9.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0921\/2041\/6571\/files\/90-7481-08_d2b223d2-6f90-4a3e-a424-1031c3dfbced.png?v=1784777672","url":"https:\/\/preiser.com\/products\/qualitative-filter-paper-grade-642-4-25-cm-2-0-micron-100-pk-ahlstrom-6420-0425","provider":"Preiser Scientific","version":"1.0","type":"link"}