Whatman 1820-047 Glass Microfiber Binder Free Filter, Grade Gf/A, 4.7Cm These GF/A glass microfiber filters offer fine particle retention and high flow rate, as well as good loading capacity. Used for high efficiency general purpose laboratory filtration, including water pollution monitoring of effluents, for filtration of water, algae and bacteria cultures, foodstuff analyses, protein filtration and radioimmunoassay of weak ß emitters. Recommended for gravimetric determination of airborne particulates, stack sampling and absorption methods of air pollution monitoring. Retention: 1.6µm. Diameter: 4.7cm. 100/Pack. Whatman #: 1820-047. Product Features Diameter: 4.7cm Grade GF/A; Retention: 1.6µm Fine particle retention; high flow rate; good loading capacity; used for high efficiency general purpose laboratory filtration Uses include water pollution monitoring of effluents, water filtration, algae and bacteria cultures, foodstuff analyses, protein filtration, radioimmunoassay of weak ß emitters Recommended for gravimetric determination of airborne particulates, stack sampling and absorption methods of air pollution monitoring 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!