Whatman Filter Paper - Grade 113 Circles
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. Some wet strengthened grades are available in folded (prepleated) forms.
Grade 113 (30 µm) 
Ultra high loading capacity with a particle retention making it ideal for use with coarse or gelatinous precipitates. Fastest flow rate of the qualitative grades. Creped surface. Thickest filter paper in the qualitative range. This filter is also available in the FilterCup, a convenient, disposable 70 mm filter funnel with a 250 ml capacity, molded from polypropylene with an integral, heat bonded filter.


Available In The Following Sizes
Diameter P/Box
90 mm 100
110 mm 100
125 mm 100
150 mm 100
185 mm 100
240 mm 100


Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on our website.