Glass Microfiber Filter Paper - 1110-0470 - Grade 111, 4.70cm 9cm Grade 75 is often used

Grade 75 is often used for filtering trace elements

zinc and ammonium hydroxides

zirconium and aluminum hydroxides

Grade 74 is also used as a high purity filter for speedy filtering of trace elements such as silver chromate

Glass Microfiber Filter Paper - 1110-0470 - Grade 111, 4.70cm 9cm Grade 75 is often usedAhlstrom Munksj 111 1. 2 m, Fast Speed This grade offers fine particle retention with high filtration speed and good loading capacity. Grade 111 is used in general laboratory filtration including atmospheric and water pollution monitoring such as intake controls, ozone level, and water effluents. Grade 111 is also well suited for filtration of water and protein, testing of algae, bacteria cultures and for radioimmunoassay with weak beta emitters.