Qualitative Filter Paper, Wet Strengthened

Photo of Ahlstrom 950 Slow Speed Wet-Strengthened Filter Paper

Wet-Strengthened Grades: Qualitative wet-strengthened grades are manufactured for applications using filter paper in a system or apparatus that operates under pressure or vacuum conditions. These systems require the use of extremely strong filter paper such as those in Ahlstrom's Binder Series. These grades contain a small amount of chemically stable, insoluble binding resin that strengthens the natural fiber-to-fiber bonds under wet conditions.

Photo of Ahlstrom 909 Medium Speed Wet-Strengthened Filter Paper

Ahlstrom 909, 3.0 mm - Medium Speed. This medium flow rate qualitative wet-strengthened grade filter paper with very good retention is a tighter version of Ahlstrom 962. This grade has a rough surface and is often found in the food industry for routine tests. Ahlstrom

Photo of Ahlstrom 962 Fast Speed Wet-Strengthened Filter Paper

Ahlstrom 962, 27 mm - Fast Speed. This fast filtering qualitative wet-strengthened grade filter paper is a thinner version of Ahlstrom 961. Recommended for the filtration of coarse and gelatinous precipitates. The creped surface also offers higher surface area to maintain high filtration speed. Ahlstrom

Photo of Whatman Grade 114 Qualitative Filter Paper Wet-Strengthened

Whatman Grade 114 is a wet strengthed qualitative filter paper. Only half the thickness of No. 113 and suitable for coarse or gelatinous precipitates with a retention of 25 µm. Smooth surface for easy recovery of precipitates. 100 circles/box.

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Photo of Whatman Grade 113 Qualitative Filter Paper Wet-Strengthened

Whatman Grade 113 is a wet-strengthened qualitative filter paper. 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 Whatman range. This filter is also available in the Whatman FilterCup. This is a convenient, disposable 70mm filter funnel with a 250mL capacity molded from polypropylene with an integral, heat bonded filter. 100 circles/box.

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Photo of Whatman Grade 2V Folded Qualitative Filter Paper

Whatman No. 2V. Same paper as Whatman No. 2, but folded (fluted). Widely used for general purpose filtration. Slightly more retentive than No. 1. Has excellent particle retention (8 µm) and a good filtration speed and loading capacity. Grade 2V pre-folded filter sheets are suitable for extracting samples from soil to support contaminant testing in the presence of weakly acidic solutions.100 circles/box.

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Photo of Whatman Grade 113V Fluted Qualitative Filter Papers Wet-Strengthened

Whatman Grade 113V creped and folded filter paper, for use with a conical filter funnel, offers fast filtration and high loading capacity for analysis involving coarse particles or gelatinous precipitates. Nominal particle retention rating of 30 µm. Fastest flow rate of any qualitative grade. 100/box.

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Photo of Whatman Grade 114V Fluted Qualitative Filter Papers Wet-Strengthened

Whatman Grade 114V is the same paper as Grade 114, except fluted/prepleated. Strong, wet-strengthened filter with very fast flow rate (25 µm retention). Ideal for coarse particles and gelatinous precipitates. Smooth surface. 100/box.

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