Ahlstrom 151 Glass Microfiber Filter Papers are slow speed filters designed to retain extremely find particles down to 0.7µm. Grade 151 has retention comparable to membrane filter while providing higher flow and loading capacity. It is recommended for filtering fine precipitated proteins. In the filtration of nucleic acids and difficult biochemical solutions, Grade 151 is used in combination of Grade 141 as a highly efficient protective and retentive pre-filter to extend the loading capacity of membrane filters. Grade 151 is also recommended for use in TCLP procedure as described in test methods for evaluating solid wastes, EPA method 1311.

Standard glass microfiber filters contain no binders or other additives that may cause interference to sensitive enzymatic or other chemical reactions. The unique characteristics of glass microfiber make its use particularly advantageous to laboratory filtration by enabling fast filtration of large volume and difficult solutions without premature clogging.

Key Features

• Retention: 0.7µm
• Filtration Speed: 274 sec/100mls (Herzberg), 25 mls/min (Rapidity)
• Very High Loading Capacity
• Equivalent to Grade GF/F