Qualitative Filter Paper 6130 1100 Grade 613, 11cm Revolvedora De Concreto 1 Saco Motor a Gasolina Hyundai 13 Hp Hkrb1. Ahlstrom Munksj 613 6 m, Medium Speed This is a strong filter paper with a medium flow rate and retention. Grade 613 is commonly used in student laboratories. This strong general purpose paper filter is also useful in Buchner funnels for barium carbonate, lead chromate and beryllium hydroxides. Ahlstrom Munksj offers a full range of specially designed filter paper for use in the sugar industry. Grade 613 is particularly well suited for general laboratory filtration methods and qualitative analysis. Call for pricing if ordering larger quantities