11 Cm Lab Filter Paper, Standard Grades 1, 2, 4 -, Bundle Of 3 X 100 Discs GRADE 1, 2, 4 STANDARD Qualitative Filter Paper APPLICATIONS science : From clean-up of insoluble liquids to routine clarification of suspension food : From solid foodstuffs separation and liquid extraction to fat content determination beverage : From filtration of musts, pulps and syrups to malt analysis agriculture : From soil pre-filtration to analysis environment : From monitoring of fast flowing exhausts to smoke pollution COARSE TO HIGH RETENTION Grade 1 : Metal Sulfates (Pb, coarse form of Ba and Ca) Grade 2 : Metal Sulfides (Cd, Ni, Zn, Fe, Pb, Mn, Ag, As) Grade 4 : Metal hydroxides (Al, Cr, Fe, Mg) , Be Oxide paper : pure cotton cellulose flow : slow, medium, fast retention : 5~10, 10~15, 20~25 ?m (fine, medium, coarse) speed : 15~20 s (10ml DIN 53137) size : ? 110 mm thickness : 140-160 ?m weight : 86 g/m ash : 0.1% qty : 300 discs PLAIN-DISCS Flat Discs are suitable for gravity and Buchner low suction vacuum filtration. EQUIVALENCE SIZE Product Features GRADES 1, 2, 4 : 11cm - Equivalent to Whatman Top 3 standard qualitative grades (110mm) GRADE 1 : MEDIUM RETENTION / MEDIUM FLOW - Retains medium crystalline particles (10~15 micron) GRADE 2 : HIGH RETENTION / SLOW FLOW - Retains fine crystalline particles (5~10 micron) GRADE 4 : COARSE RETENTION / FAST FLOW - Retains coarse and gelatinous precipitates (20~25 micron) BROAD APPLICATION RANGE : lab chemistry, food agriculture, brewing wine, air gas filtration Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!