Whatman™ Grade 91 Qualitative Filter Papers
A general purpose creped filter for less critical routine analysis. Widely used to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration.
Whatman™ Grade 91 Qualitative Filter Papers
A general purpose creped filter for less critical routine analysis. Widely used to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration.
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Grade 91 Qualitative Filter Papers
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Overview
A general purpose creped filter for less critical routine analysis. Widely used to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration.
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.
Product specifications
Showing 10 products
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, circle, 185 mm (subdivided into 100) (1000/Pk)
1091-185
In stock216 available
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, circle, 190 mm (subdivided into 100) (1000/Pk)
1091-190
In stock6 available
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, circle, 150 mm (subdivided into 100) (1000/Pk)
1091-150
Selling fast1 available
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, circle, 110 mm (subdivided into 100) (4000/Pk)
1091-110
Stock on request
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, circle, 125 mm (subdivided into 100) (4000/Pk)
1091-125
Stock on request
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, circle, 165 mm (subdivided into 100) (1000/Pk)
1091-165
Stock on request
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, circle, 240 mm (subdivided into 100) (1000/Pk)
1091-240
Stock on request
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, circle, 330 mm (100/Pk)
1091-330
Discontinued
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, sheet, 58 x 58 cm (500/Pk)
1091-930
Stock on request
Whatman™ Grade 91 qualitative filter paper, wet-strengthened, sheet, 61 x 61 cm (500/Pk)
1091-935
Stock on request
Product availability is not guaranteed and subject to change.
