Whatman grade 1 qualitative filter papers

ID	Product Name
28413929	Grade 1 Qualitative Filter Paper Standard Grade, circle, 10 mm
28413916	Grade 1 Qualitative Filter Paper Standard Grade, circle, 110 mm
28413917	Grade 1 Qualitative Filter Paper Standard Grade, circle, 125 mm
28413902	Grade 1 Qualitative Filter Paper Standard Grade, circle, 15 mm
28413918	Grade 1 Qualitative Filter Paper Standard Grade, circle, 150 mm
28413919	Grade 1 Qualitative Filter Paper Standard Grade, circle, 185 mm
28413904	Grade 1 Qualitative Filter Paper Standard Grade, circle, 20 mm
28413920	Grade 1 Qualitative Filter Paper Standard Grade, circle, 240 mm
28413905	Grade 1 Qualitative Filter Paper Standard Grade, circle, 25 mm
28413923	Grade 1 Qualitative Filter Paper Standard Grade, circle, 25 mm
28413921	Grade 1 Qualitative Filter Paper Standard Grade, circle, 270 mm
28413924	Grade 1 Qualitative Filter Paper Standard Grade, circle, 30 mm
28413906	Grade 1 Qualitative Filter Paper Standard Grade, circle, 30 mm
28413907	Grade 1 Qualitative Filter Paper Standard Grade, circle, 32 mm
28413922	Grade 1 Qualitative Filter Paper Standard Grade, circle, 320 mm
28413925	Grade 1 Qualitative Filter Paper Standard Grade, circle, 385 mm
28413926	Grade 1 Qualitative Filter Paper Standard Grade, circle, 400 mm
28413908	Grade 1 Qualitative Filter Paper Standard Grade, circle, 42.5 mm
28413909	Grade 1 Qualitative Filter Paper Standard Grade, circle, 45 mm
28413910	Grade 1 Qualitative Filter Paper Standard Grade, circle, 47 mm
28413927	Grade 1 Qualitative Filter Paper Standard Grade, circle, 500 mm
28413911	Grade 1 Qualitative Filter Paper Standard Grade, circle, 55 mm
28413912	Grade 1 Qualitative Filter Paper Standard Grade, circle, 70 mm
28413913	Grade 1 Qualitative Filter Paper Standard Grade, circle, 85 mm
28413914	Grade 1 Qualitative Filter Paper Standard Grade, circle, 90 mm
28413934	Grade 1 Qualitative Filter Paper Standard Grade, sheet, 26 × 31 mm
28413937	Grade 1 Qualitative Filter Paper Standard Grade, sheet, 460 × 570 mm
28413938	Grade 1 Qualitative Filter Paper Standard Grade, sheet, 460 × 570 mm
28413942	Grade 1 Qualitative Filter Paper Standard Grade, sheet, 580 × 680 mm
28413941	Grade 1 Qualitative Filter Paper Standard Grade, sheet, 580 × 680 mm
28413939	Grade 1 Qualitative Filter Paper Standard Grade, sheet, 600 × 600 mm
28413935	Grade 1 Qualitative Filter Paper Standard Grade, sheet, 75 × 100 mm

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.

How well do you know your filter paper grades and why you use them? To find out, read our blog Back to Basics Part 1: A Guide to Types of Whatman Filter Paper Grades.

Ready for more? Read our 6-part blog series Whatman paper filtration 101 or our complete lab filtration blog.

For more information and help choosing from our wide range of filter paper grades, download our Filter paper and membranes guide or check our Whatman filter selector to find your filter fast.

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Product	Product Name	Format All Circles Sheets Roll	Dimensions All Ø 42.5 mm Ø 55 mm Ø 125 mm Ø 150 mm Ø 400 mm Ø 32 mm Ø 185 mm Ø 270 mm Ø 20 mm Ø 30 mm Ø 320 mm Ø 15 mm Ø 90 mm Ø 47 mm Ø 70 mm Ø 240 mm Ø 25 mm Ø 85 mm Ø 385 mm Ø 10 mm Ø 110 mm Ø 500 mm Ø 45 mm Ø 76.2 mm 75 x 100 mm (3 x 4 in) 460 x 570 mm (18.11 x 22.45 in) 600 x 600 mm (23.62 x 23.62 in) 26 x 31 mm (1 x 1.23 in) 580 x 680 mm (22 x 26 in)	Pack size All 100 pieces 400 pieces 500 pieces 5000 pieces 1000 pieces 1	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 {{stock.stockMessage}}
1001-320	Grade 1 Qualitative Filter Paper Standard Grade, circle, 320 mm	Circles	Ø 320 mm	100 pieces	109.34 USD	Add to cart {{stock.stockMessage}}
1001-150	Grade 1 Qualitative Filter Paper Standard Grade, circle, 150 mm	Circles	Ø 150 mm	100 pieces	28.88 USD	Add to cart {{stock.stockMessage}}
1001-020	Grade 1 Qualitative Filter Paper Standard Grade, circle, 20 mm	Circles	Ø 20 mm	400 pieces	49.25 USD	Add to cart {{stock.stockMessage}}
1001-085	Grade 1 Qualitative Filter Paper Standard Grade, circle, 85 mm	Circles	Ø 85 mm	100 pieces	14.46 USD	Add to cart {{stock.stockMessage}}
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 {{stock.stockMessage}}
1001-10048	Grade 1 Qualitative filter paper standard grade, circle, 90 mm	Circles	Ø 90 mm	5000 pieces	236.00 USD	Add to cart {{stock.stockMessage}}
1001-734	Grade 1 Qualitative Filter Paper Standard Grade, roll, 47 cm × 100 m	Roll		1	827.00 USD	Add to cart {{stock.stockMessage}}
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 {{stock.stockMessage}}
1001-400	Grade 1 Qualitative Filter Paper Standard Grade, circle, 400 mm	Circles	Ø 400 mm	100 pieces	180.17 USD	Add to cart {{stock.stockMessage}}
1001-500	Grade 1 Qualitative Filter Paper Standard Grade, circle, 500 mm	Circles	Ø 500 mm	100 pieces	226.00 USD	Add to cart {{stock.stockMessage}}
1001-0155	Grade 1 Qualitative Filter Paper Standard Grade, circle, 15 mm	Circles	Ø 15 mm	500 pieces	49.84 USD	Add to cart {{stock.stockMessage}}
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 {{stock.stockMessage}}
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 {{stock.stockMessage}}
1001-329	Grade 1 Qualitative Filter Paper Standard Grade, circle, 30 mm	Circles	Ø 30 mm	100 pieces	11.28 USD	Add to cart {{stock.stockMessage}}
1001-240	Grade 1 Qualitative Filter Paper Standard Grade, circle, 240 mm	Circles	Ø 240 mm	100 pieces	64.30 USD	Add to cart {{stock.stockMessage}}
1001-090	Grade 1 Qualitative Filter Paper Standard Grade, circle, 90 mm	Circles	Ø 90 mm	100 pieces	16.16 USD	Add to cart {{stock.stockMessage}}
1001-070	Grade 1 Qualitative Filter Paper Standard Grade, circle, 70 mm	Circles	Ø 70 mm	100 pieces	12.86 USD	Add to cart {{stock.stockMessage}}
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 {{stock.stockMessage}}
1001-385	Grade 1 Qualitative Filter Paper Standard Grade, circle, 385 mm	Circles	Ø 385 mm	100 pieces	180.17 USD	Add to cart {{stock.stockMessage}}
1001-032	Grade 1 Qualitative Filter Paper Standard Grade, circle, 32 mm	Circles	Ø 32 mm	100 pieces	11.28 USD	Add to cart {{stock.stockMessage}}
1001-125	Grade 1 Qualitative Filter Paper Standard Grade, circle, 125 mm	Circles	Ø 125 mm	100 pieces	19.27 USD	Add to cart {{stock.stockMessage}}
1001-045	Grade 1 Qualitative Filter Paper Standard Grade, circle, 45 mm	Circles	Ø 45 mm	100 pieces	6.06 USD	Add to cart {{stock.stockMessage}}
1001-047	Grade 1 Qualitative Filter Paper Standard Grade, circle, 47 mm	Circles	Ø 47 mm	100 pieces	11.28 USD	Add to cart {{stock.stockMessage}}
1001-185	Grade 1 Qualitative Filter Paper Standard Grade, circle, 185 mm	Circles	Ø 185 mm	100 pieces	40.22 USD	Add to cart {{stock.stockMessage}}
1001-055	Grade 1 Qualitative Filter Paper Standard Grade, circle, 55 mm	Circles	Ø 55 mm	100 pieces	12.86 USD	Add to cart {{stock.stockMessage}}
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 {{stock.stockMessage}}
1001-6508	Grade 1 Qualitative Filter Paper Standard Grade, circle, 10 mm	Circles	Ø 10 mm	500 pieces	49.84 USD	Add to cart {{stock.stockMessage}}
1001-030	Grade 1 Qualitative Filter Paper Standard Grade, circle, 30 mm	Circles	Ø 30 mm	400 pieces	43.35 USD	Add to cart {{stock.stockMessage}}
1001-110	Grade 1 Qualitative Filter Paper Standard Grade, circle, 110 mm	Circles	Ø 110 mm	100 pieces	19.27 USD	Add to cart {{stock.stockMessage}}
1001-025	Grade 1 Qualitative Filter Paper Standard Grade, circle, 25 mm	Circles	Ø 25 mm	400 pieces	43.35 USD	Add to cart {{stock.stockMessage}}
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 {{stock.stockMessage}}
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 {{stock.stockMessage}}
1001-325	Grade 1 Qualitative Filter Paper Standard Grade, circle, 25 mm	Circles	Ø 25 mm	100 pieces	11.28 USD	Add to cart {{stock.stockMessage}}
1001-270	Grade 1 Qualitative Filter Paper Standard Grade, circle, 270 mm	Circles	Ø 270 mm	100 pieces	78.76 USD	Add to cart {{stock.stockMessage}}

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Whatman Grade 1 Qualitative Filter Papers

Whatman Grade 1 Qualitative Filter Papers

Medium flow rate and retention for a wide range of qualitative analytical separations

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