Grade B cut 4.7cm diameter

Competitive Equivalents:

Whatman: 1821-047
Pall: 66209
Millipore: APFB04700
Ahlstrom: 1210-047

Grade B - Fine porosity, medium to fast flow rate, with a 1.0µm size particle retention. Ideally suited for the collection of biochemical polymers that have been precipitated by denaturation. This material is twice as thick as Grade A with a higher loading capacity. May also be used as a solid particulate filter for gasses or as a prefilter. Binderless borosilicate glass microfiber. 
Competitive Equivalents:
Whatman: 1821-047
Pall: 66209
Millipore: APFB04700
Ahlstrom: 1210-047