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Whatman™ Quantitative filter papers, ashless, Grade 40
Ashless filter paper with medium speed and retention, ideal for quantitative analysis and general-purpose filtration.
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Whatman Quantitative filter papers, ashless, Grade 40
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Overview
Whatman™ Grade 40 high-purity filters from Cytiva are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.
- High-purity filters contain 0.007% maximum ash content
- Medium nominal particle retention rating of 8 µm
- Medium filtration speed (Herzberg 340 s)
- Particularly useful for gravimetric analysis
Applications for high-purity Grade 40 filters
High-purity filters support accurate analysis in applications sensitive to very low levels of background contamination and in gravimetric analysis where ash content might affect weight measurements of combusted samples. Cytiva's high-purity Whatman™ Grade 40 ashless paper is suited to:
- Soil analysis, when separating solid matter from aqueous extracts
- Quantitative determination of milk sediment
- Use as a clean-up filter for solutions prior to atomic absorption (AA) spectrometry
- Analysis of constituent components in cements, clays, iron, and steel products
- Collection of trace elements and radionuclides from the atmosphere
Cytiva offers a range of Whatman™ ashless filter paper for your gravimetric analysis needs.
Product specifications
Showing 16 products
Specs
Product
Dimensions
Format
Availability
Price
1440-012
12.7 mm
Circles
In stock59 available
1440-032
32 mm
Circles
In stock90 available
1440-042
42.5 mm
Circles
In stock326 available
1440-047
47 mm
Circles
In stock145 available
1440-055
55 mm
Circles
In stock189 available
1440-070
70 mm
Circles
In stock116 available
1440-090
90 mm
Circles
In stock145 available
1440-110
110 mm
Circles
In stock886 available
1440-125
125 mm
Circles
In stock2413 available
1440-150
150 mm
Circles
In stock2047 available
1440-185
185 mm
Circles
In stock233 available
1440-240
240 mm
Circles
In stock22 available
1440-329
30 mm
Circles
In stock14 available
1440-320
320 mm
Circles
Stock on request
1440-6168
450 mm
Circles
Stock on request
1440-917
460 × 570 mm
Sheets
Stock on request
Product availability is not guaranteed and subject to change.
