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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Product Product Name Price
1001-042 Grade 1 Qualitative Filter Paper Standard Grade, circle, 42.5 mm Circles Ø 42.5 mm 100 pieces 11.28 USD Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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1001-734 Grade 1 Qualitative Filter Paper Standard Grade, roll, 47 cm × 100 m Roll 1 827.00 USD Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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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 Add to cart

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