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
1001-150 Grade 1 Qualitative Filter Paper Standard Grade, circle, 150 mm 24.05 USD Add to cart Get Quote

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1001-085 Grade 1 Qualitative Filter Paper Standard Grade, circle, 85 mm 12.05 USD Add to cart Get Quote

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1001-0155 Grade 1 Qualitative Filter Paper Standard Grade, circle, 15 mm 41.50 USD Add to cart Get Quote

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1001-020 Grade 1 Qualitative Filter Paper Standard Grade, circle, 20 mm 41.01 USD Add to cart Get Quote

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1001-320 Grade 1 Qualitative Filter Paper Standard Grade, circle, 320 mm 91.04 USD Add to cart Get Quote

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1001-400 Grade 1 Qualitative Filter Paper Standard Grade, circle, 400 mm 150.02 USD Add to cart Get Quote

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1001-929 Grade 1 Qualitative Filter Paper Standard Grade, sheet, 600 × 600 mm 153.89 USD Add to cart Get Quote

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1001-500 Grade 1 Qualitative Filter Paper Standard Grade, circle, 500 mm 187.54 USD Add to cart Get Quote

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1001-813 Grade 1 Qualitative Filter Paper Standard Grade, sheet, 26 × 31 mm 67.25 USD Add to cart Get Quote

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1001-270 Grade 1 Qualitative Filter Paper Standard Grade, circle, 270 mm 65.58 USD Add to cart Get Quote

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1001-185 Grade 1 Qualitative Filter Paper Standard Grade, circle, 185 mm 33.49 USD Add to cart Get Quote

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1001-125 Grade 1 Qualitative Filter Paper Standard Grade, circle, 125 mm 16.05 USD Add to cart Get Quote

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1001-110 Grade 1 Qualitative Filter Paper Standard Grade, circle, 110 mm 16.05 USD Add to cart Get Quote

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1001-032 Grade 1 Qualitative Filter Paper Standard Grade, circle, 32 mm 9.39 USD Add to cart Get Quote

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1001-045 Grade 1 Qualitative Filter Paper Standard Grade, circle, 45 mm 5.05 USD Add to cart Get Quote

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1001-047 Grade 1 Qualitative Filter Paper Standard Grade, circle, 47 mm 9.39 USD Add to cart Get Quote

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1001-055 Grade 1 Qualitative Filter Paper Standard Grade, circle, 55 mm 10.71 USD Add to cart Get Quote

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1001-931 Grade 1 Qualitative Filter Paper Standard Grade, sheet, 580 × 680 mm 277.38 USD Add to cart Get Quote

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1001-918 Grade 1 Qualitative Filter Paper Standard Grade, sheet, 460 × 570 mm 929.03 USD Add to cart Get Quote

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1001-6508 Grade 1 Qualitative Filter Paper Standard Grade, circle, 10 mm 41.50 USD Add to cart Get Quote

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1001-385 Grade 1 Qualitative Filter Paper Standard Grade, circle, 385 mm 150.02 USD Add to cart Get Quote

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1001-325 Grade 1 Qualitative Filter Paper Standard Grade, circle, 25 mm 9.39 USD Add to cart Get Quote

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1001-030 Grade 1 Qualitative Filter Paper Standard Grade, circle, 30 mm 36.09 USD Add to cart Get Quote

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1001-025 Grade 1 Qualitative Filter Paper Standard Grade, circle, 25 mm 36.09 USD Add to cart Get Quote

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1001-824 Grade 1 Qualitative Filter Paper Standard Grade, sheet, 75 × 100 mm 79.01 USD Add to cart Get Quote

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1001-917 Grade 1 Qualitative Filter Paper Standard Grade, sheet, 460 × 570 mm 205.99 USD Add to cart Get Quote

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1001-329 Grade 1 Qualitative Filter Paper Standard Grade, circle, 30 mm 9.39 USD Add to cart Get Quote

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1001-240 Grade 1 Qualitative Filter Paper Standard Grade, circle, 240 mm 53.54 USD Add to cart Get Quote

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1001-090 Grade 1 Qualitative Filter Paper Standard Grade, circle, 90 mm 13.45 USD Add to cart Get Quote

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1001-070 Grade 1 Qualitative Filter Paper Standard Grade, circle, 70 mm 10.71 USD Add to cart Get Quote

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1001-932 Grade 1 Qualitative Filter Paper Standard Grade, sheet, 580 × 680 mm 885.18 USD Add to cart Get Quote

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1001-042 Grade 1 Qualitative Filter Paper Standard Grade, circle, 42.5 mm 9.39 USD Add to cart Get Quote

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1001-10035 Grade 1 Qualitative Filter paper standard grade, circle, 76.2 mm, 500/PK 42.31 USD Add to cart Get Quote

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1001-734 Grade 1 Qualitative Filter Paper Standard Grade, 47 × 100 m 688.36 USD Add to cart Get Quote

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1001-10048 Grade 1 Qualitative filter paper standard grade, circle, 90 mm 197.63 USD Add to cart Get Quote

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