Glass Microfiber Filter Paper - 1410-0550 - Grade 141, 5.50cm 5.50cm Grade 54 is also used

Grade 54 is also used in air pollution testing to determine gaseous compounds

7 cm size)

Grade 169 for STM2540-E - Volatile Suspended Solids

and cobalt sulfide

Glass Microfiber Filter Paper - 1410-0550 - Grade 141, 5.50cm 5.50cm Grade 54 is also usedAhlstrom Munksj 141 3. 1 m, Fast Speed This grade offers better filtration speed and a higher loading capacity than an analytical filter paper of similar particle retention. Grade 141 is particularly recommended for pre filtration of membrane filters and is also used in combination with Grade 121 as a highly efficient protective and retentive grade density pre filter for membrane filters.