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Whatman Quantitative Filter Papers, Ashless, Grade 40

Whatman Grade 40 high-purity filters from Cytiva's business are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.

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ID	Product Name
28417993	Grade 40 Ashless Filter Paper for Pollution Analysis, 110 mm circle (100 pcs)
28417986	Grade 40 Ashless Filter Paper for Pollution Analysis, 12.7 mm circle (400 pcs)
28417994	Grade 40 Ashless Filter Paper for Pollution Analysis, 125 mm circle (100 pcs)
28417995	Grade 40 Ashless Filter Paper for Pollution Analysis, 150 mm circle (100 pcs)
28417996	Grade 40 Ashless Filter Paper for Pollution Analysis, 185 mm circle (100 pcs)
28417997	Grade 40 Ashless Filter Paper for Pollution Analysis, 240 mm circle (100 pcs)
28417999	Grade 40 Ashless Filter Paper for Pollution Analysis, 30 mm circle (100 pcs)
28417987	Grade 40 Ashless Filter Paper for Pollution Analysis, 32 mm circle (100 pcs)
28417998	Grade 40 Ashless Filter Paper for Pollution Analysis, 320 mm circle (100 pcs)
28417988	Grade 40 Ashless Filter Paper for Pollution Analysis, 42.5 mm circle (100 pcs)
28418000	Grade 40 Ashless Filter Paper for Pollution Analysis, 450 mm circle (100 pcs)
28418001	Grade 40 Ashless Filter Paper for Pollution Analysis, 460 × 570 mm sheet (100 pcs)
28417989	Grade 40 Ashless Filter Paper for Pollution Analysis, 47 mm circle (100 pcs)
28417990	Grade 40 Ashless Filter Paper for Pollution Analysis, 55 mm circle (100 pcs)
28417991	Grade 40 Ashless Filter Paper for Pollution Analysis, 70 mm circle (100 pcs)
28417992	Grade 40 Ashless Filter Paper for Pollution Analysis, 90 mm circle (100 pcs)

Whatman Grade 40 high-purity filters from Cytiva's business 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

Cytiva offers a range of Whatman ashless filter paper for your gravimetric analysis needs. See our other ashless grades to find the right filter for your sample, or use our hardened ashless grades if your analysis involves strong acid/alkali suspensions.

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

Looking for a filter paper, membrane filter, or syringe filter? Let Cytiva help you find the optimal filter for your needs to ensure reliable analysis.

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Product	Product Name	Dimensions All Ø 42.5 mm Ø 55 mm Ø 125 mm Ø 150 mm Ø 32 mm Ø 450 mm Ø 185 mm Ø 30 mm Ø 320 mm Ø 90 mm 460 x 570 mm Ø 47 mm Ø 70 mm Ø 240 mm Ø 12.7 mm Ø 110 mm	Price
1440-012	Grade 40 Ashless Filter Paper for Pollution Analysis, 12.7 mm circle (400 pcs)	Ø 12.7 mm	21.93 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-032	Grade 40 Ashless Filter Paper for Pollution Analysis, 32 mm circle (100 pcs)	Ø 32 mm	24.54 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-042	Grade 40 Ashless Filter Paper for Pollution Analysis, 42.5 mm circle (100 pcs)	Ø 42.5 mm	25.81 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-047	Grade 40 Ashless Filter Paper for Pollution Analysis, 47 mm circle (100 pcs)	Ø 47 mm	27.05 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-055	Grade 40 Ashless Filter Paper for Pollution Analysis, 55 mm circle (100 pcs)	Ø 55 mm	28.41 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-070	Grade 40 Ashless Filter Paper for Pollution Analysis, 70 mm circle (100 pcs)	Ø 70 mm	29.65 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-090	Grade 40 Ashless Filter Paper for Pollution Analysis, 90 mm circle (100 pcs)	Ø 90 mm	41.24 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-110	Grade 40 Ashless Filter Paper for Pollution Analysis, 110 mm circle (100 pcs)	Ø 110 mm	48.97 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-125	Grade 40 Ashless Filter Paper for Pollution Analysis, 125 mm circle (100 pcs)	Ø 125 mm	55.46 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-150	Grade 40 Ashless Filter Paper for Pollution Analysis, 150 mm circle (100 pcs)	Ø 150 mm	73.54 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-185	Grade 40 Ashless Filter Paper for Pollution Analysis, 185 mm circle (100 pcs)	Ø 185 mm	108.30 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-240	Grade 40 Ashless Filter Paper for Pollution Analysis, 240 mm circle (100 pcs)	Ø 240 mm	171.97 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-320	Grade 40 Ashless Filter Paper for Pollution Analysis, 320 mm circle (100 pcs)	Ø 320 mm	355.00 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-329	Grade 40 Ashless Filter Paper for Pollution Analysis, 30 mm circle (100 pcs)	Ø 30 mm	20.69 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-6168	Grade 40 Ashless Filter Paper for Pollution Analysis, 450 mm circle (100 pcs)	Ø 450 mm	424.00 USD	Add to cart Get Quote In Stock Stock on request Limited stock
1440-917	Grade 40 Ashless Filter Paper for Pollution Analysis, 460 × 570 mm sheet (100 pcs)	460 x 570 mm	735.00 USD	Add to cart Get Quote In Stock Stock on request Limited stock

Whatman Quantitative Filter Papers, Ashless, Grade 40

Whatman Quantitative Filter Papers, Ashless, Grade 40

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Whatman Quantitative Filter Papers, Ashless, Grade 40

Whatman Quantitative Filter Papers, Ashless, Grade 40

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