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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 (pre-pleated) forms.
This filter is also available in the filter cup, a convenient, disposable 70 mm filter funnel with a 250 ml capacity, molded from polypropylene with an integral, heat bonded filter. Also available as Grade 113V.
|Parameter||Grade 113 Qualitative Filter Paper Wet-Strengthened, circle, 125mm|
|Grade Type||Wet Strengthened|
|Typical Particle Retention in Liquid1||30 micro-m|
|Nominal Thickness||420 micro-m|
|Typical water flow rate2||774 ml/min|
|Nominal Basis Weight||125 g/m2|
|Nominal Air Flow Rate||2 s/100 ml/in2|