Whatman Grade 1 Qualitative Filter Papers are the most widely used filter paper for routine laboratory applications, qualitative analytical separations, and clarifying liquids. They are the standard grade cellulose filter papers for medium flow rates.
- Qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate
- Agricultural soil analysis and seed testing procedures
- Industrial food processing techniques to extract liquid or separate solid foodstuffs from associated liquid
- Air pollution monitoring by collecting atmospheric dust from airflow and photometrically measuring the stain-intensity
- Gas detection by quantitative chromogenesis with optical reflectance
Medium flow rate and retention for a wide range of qualitative analytical separations
Grade 1 Qualitative Filter Papers (11 µm particle retention) are available in a variety of sizes and formats including circles, sheets and prepleated filters. They are also available in FilterCup format, a convenient, 250 ml capacity disposable 70 mm filter funnel molded from polypropylene with an integral, heat-bonded filter.
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1001-042 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 42.5 mm | Circles | Ø 42.5 mm | 100 pieces | 11.28 USD |
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1001-320 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 320 mm | Circles | Ø 320 mm | 100 pieces | 109.34 USD |
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1001-150 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 150 mm | Circles | Ø 150 mm | 100 pieces | 28.88 USD |
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1001-020 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 20 mm | Circles | Ø 20 mm | 400 pieces | 49.25 USD |
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1001-085 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 85 mm | Circles | Ø 85 mm | 100 pieces | 14.46 USD |
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1001-929 | Grade 1 Qualitative Filter Paper Standard Grade, sheet, 600 × 600 mm | Sheets | 600 x 600 mm (23.62 x 23.62 in) | 100 pieces | 184.81 USD |
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1001-10048 | Grade 1 Qualitative filter paper standard grade, circle, 90 mm | Circles | Ø 90 mm | 5000 pieces | 236.00 USD |
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1001-734 | Grade 1 Qualitative Filter Paper Standard Grade, roll, 47 cm × 100 m | Roll | 1 | 827.00 USD |
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1001-10035 | Grade 1 Qualitative Filter paper standard grade, circle, 76.2 mm, 500/PK | Circles | Ø 76.2 mm | 500 pieces | 50.82 USD |
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1001-400 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 400 mm | Circles | Ø 400 mm | 100 pieces | 180.17 USD |
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1001-500 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 500 mm | Circles | Ø 500 mm | 100 pieces | 226.00 USD |
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1001-0155 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 15 mm | Circles | Ø 15 mm | 500 pieces | 49.84 USD |
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1001-824 | Grade 1 Qualitative Filter Paper Standard Grade, sheet, 75 × 100 mm | Sheets | 75 x 100 mm (3 x 4 in) | 500 pieces | 94.89 USD |
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1001-917 | Grade 1 Qualitative Filter Paper Standard Grade, sheet, 460 × 570 mm | Sheets | 460 x 570 mm (18.11 x 22.45 in) | 100 pieces | 248.00 USD |
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1001-329 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 30 mm | Circles | Ø 30 mm | 100 pieces | 11.28 USD |
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1001-240 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 240 mm | Circles | Ø 240 mm | 100 pieces | 64.30 USD |
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1001-090 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 90 mm | Circles | Ø 90 mm | 100 pieces | 16.16 USD |
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1001-070 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 70 mm | Circles | Ø 70 mm | 100 pieces | 12.86 USD |
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1001-932 | Grade 1 Qualitative Filter Paper Standard Grade, sheet, 580 × 680 mm | Sheets | 580 x 680 mm (22 x 26 in) | 500 pieces | 1 063.00 USD |
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1001-385 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 385 mm | Circles | Ø 385 mm | 100 pieces | 180.17 USD |
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1001-032 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 32 mm | Circles | Ø 32 mm | 100 pieces | 11.28 USD |
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1001-125 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 125 mm | Circles | Ø 125 mm | 100 pieces | 19.27 USD |
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1001-045 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 45 mm | Circles | Ø 45 mm | 100 pieces | 6.06 USD |
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1001-047 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 47 mm | Circles | Ø 47 mm | 100 pieces | 11.28 USD |
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1001-185 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 185 mm | Circles | Ø 185 mm | 100 pieces | 40.22 USD |
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1001-055 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 55 mm | Circles | Ø 55 mm | 100 pieces | 12.86 USD |
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1001-813 | Grade 1 Qualitative Filter Paper Standard Grade, sheet, 26 × 31 mm | Sheets | 26 x 31 mm (1 x 1.23 in) | 1000 pieces | 80.76 USD |
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1001-6508 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 10 mm | Circles | Ø 10 mm | 500 pieces | 49.84 USD |
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1001-030 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 30 mm | Circles | Ø 30 mm | 400 pieces | 43.35 USD |
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1001-110 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 110 mm | Circles | Ø 110 mm | 100 pieces | 19.27 USD |
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1001-025 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 25 mm | Circles | Ø 25 mm | 400 pieces | 43.35 USD |
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1001-931 | Grade 1 Qualitative Filter Paper Standard Grade, sheet, 580 × 680 mm | Sheets | 580 x 680 mm (22 x 26 in) | 100 pieces | 333.00 USD |
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1001-918 | Grade 1 Qualitative Filter Paper Standard Grade, sheet, 460 × 570 mm | Sheets | 460 x 570 mm (18.11 x 22.45 in) | 500 pieces | 1 116.00 USD |
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1001-325 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 25 mm | Circles | Ø 25 mm | 100 pieces | 11.28 USD |
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1001-270 | Grade 1 Qualitative Filter Paper Standard Grade, circle, 270 mm | Circles | Ø 270 mm | 100 pieces | 78.76 USD |
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