Whatman Grade 91 Qualitative Filter Papers
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.
Order ProductA 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.
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| Product | Product Name | Price | ||
|---|---|---|---|---|
| 1091-930 | Grade 91 Qualitative Filter Paper Wet-Strengthened, sheet, 58 x 58 cm | 58 x 58 cm | 930.05 USD |
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| 1091-110 | Grade 91 Qualitative Filter Paper Wet-Strengthened, circle, 110 mm (subdivided into 100) | Ø 110 mm | 327.35 USD |
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| 1091-935 | Grade 91 Qualitative Filter Paper Wet-Strengthened, sheet, 61 x 61 cm | 61 x 61 cm | 961.67 USD |
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| 1091-240 | Grade 91 Qualitative Filter Paper Wet-Strengthened, circle, 240 mm (subdivided into 100) | Ø 240 mm | 290.64 USD |
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| 1091-190 | Grade 91 Qualitative Filter Paper Wet-Strengthened, circle, 190 mm (subdivided into 100) | Ø 190 mm | 288.60 USD |
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| 1091-185 | Grade 91 Qualitative Filter Paper Wet-Strengthened, circle, 185 mm (subdivided into 100) | Ø 185 mm | 235.57 USD |
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| 1091-165 | Grade 91 Qualitative Filter Paper Wet-Strengthened, circle, 165 mm (subdivided into 100) | Ø 165 mm | 148.05 USD |
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| 1091-150 | Grade 91 Qualitative Filter Paper Wet-Strengthened, circle, 150 mm (subdivided into 100) | Ø 150 mm | 146.14 USD |
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| 1091-125 | Grade 91 Qualitative Filter Paper Wet-Strengthened, circle, 125 mm (subdivided into 100) | Ø 125 mm | 335.51 USD |
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| 1091-330 | Grade 91 Qualitative Filter Paper Wet-Strengthened, circle, 330mm (subdivided into 100) | Ø 330 mm | 52.89 USD |
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