Cytiva No. 93 Filter Circles 12.5cm/10, 100 Items WHAT1093-125

These cellulose filter papers are intermediate in speed and retention between grades 1 and 4.

These extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin. Normal qualitative applications will not introduce any significant impurities into the filtrate. The resins do, however, contain nitrogen so these grades should not be used in Kjeldahl estimations, etc.