- Article: A guide to Whatman™ filter paper grades
- Article: Quantitative filter paper grades explained
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Whatman™ Grade 1 qualitative filter papers
Grade 1 qualitative filter papers are ideal for routine lab applications, offering medium flow rates and reliable performance.
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Grade 1 qualitative filter papers
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Overview
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.
Product specifications
Showing 35 products
Specs
Product
Format
Dimensions
Pack size
Availability
Price
1001-0155
Circles
Ø 15 mm
500 pieces
In stock86 available
1001-020
Circles
Ø 20 mm
400 pieces
In stock41 available
1001-025
Circles
Ø 25 mm
400 pieces
In stock63 available
1001-030
Circles
Ø 30 mm
400 pieces
In stock22 available
1001-032
Circles
Ø 32 mm
100 pieces
In stock238 available
1001-042
Circles
Ø 42.5 mm
100 pieces
In stock4008 available
1001-045
Circles
Ø 45 mm
100 pieces
In stock305 available
1001-047
Circles
Ø 47 mm
100 pieces
In stock596 available
1001-055
Circles
Ø 55 mm
100 pieces
In stock2418 available
1001-070
Circles
Ø 70 mm
100 pieces
In stock1847 available
1001-085
Circles
Ø 85 mm
100 pieces
In stock344 available
1001-090
Circles
Ø 90 mm
100 pieces
In stock2914 available
1001-10048
Circles
Ø 90 mm
5000 pieces
In stock7 available
1001-110
Circles
Ø 110 mm
100 pieces
In stock2154 available
1001-125
Circles
Ø 125 mm
100 pieces
In stock4138 available
1001-150
Circles
Ø 150 mm
100 pieces
In stock3610 available
1001-185
Circles
Ø 185 mm
100 pieces
In stock1007 available
1001-240
Circles
Ø 240 mm
100 pieces
In stock362 available
1001-270
Circles
Ø 270 mm
100 pieces
In stock225 available
1001-325
Circles
Ø 25 mm
100 pieces
In stock130 available
1001-329
Circles
Ø 30 mm
100 pieces
In stock130 available
1001-385
Circles
Ø 385 mm
100 pieces
In stock9 available
1001-400
Circles
Ø 400 mm
100 pieces
In stock11 available
1001-6508
Circles
Ø 10 mm
500 pieces
In stock97 available
1001-824
Sheets
75 x 100 mm (3 x 4 in)
500 pieces
In stock49 available
1001-917
Sheets
460 x 570 mm (18.11 x 22.45 in)
100 pieces
In stock26 available
1001-929
Sheets
600 x 600 mm (23.62 x 23.62 in)
100 pieces
In stock45 available
1001-931
Sheets
580 x 680 mm (22 x 26 in)
100 pieces
In stock21 available
1001-320
Circles
Ø 320 mm
100 pieces
Selling fast2 available
1001-500
Circles
Ø 500 mm
100 pieces
Selling fast4 available
1001-918
Sheets
460 x 570 mm (18.11 x 22.45 in)
500 pieces
Selling fast2 available
1001-932
Sheets
580 x 680 mm (22 x 26 in)
500 pieces
Selling fast2 available
1001-10035
Circles
Ø 76.2 mm
500 pieces
Stock on request
1001-734
Roll
47 cm × 100 m
1
Stock on request
1001-813
Sheets
26 x 31 mm (1 x 1.23 in)
1000 pieces
Stock on request
Product availability is not guaranteed and subject to change.
