The industry standard for high-purity filtration. There are a variety of smooth-surface papers for every need. All are high quality, ashless, and offer excellent wet strength.
Grade 40: is a general-purpose filter which offers medium-speed filtration and retention. (8µm)
Grade 41: is the fastest ashless paper; and used for analytical procedures involving coarse particulates. (20-25µm)
Grade 42: has extremely fine particle retention and is for gravimetric analysis and very fine precipitates. (2.5µm)
Grade 43: is a moderately fast filter for foodstuff and soil analysis, particle collection in air pollution monitoring and inorganic analysis. (16µm)
Grade 44: gives the lowest ash weight for any disc size and has a higher flow rate but is slightly less efficient than Grade 42. (3.0µm)
Grade 541: is a general-purpose hardened ashless paper, with medium retention and flow rates; it is also resistant to acids and bases. (20-25µm)
All Grades: Packaged 100 per Pack.
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Filter Paper, Grade 541, Quantitative, H ardened, Ashless, 4.7cm, 100/pk
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Filter Paper, Grade 541, Quantitative, H ardened, Ashless, 15.0cm 100/pk
Filter Paper, Grade 541, Quantitative, H ardened, Ashless, 12.5cm, 100/pk
Filter Paper, Grade 541, Quantitative, H ardened, Ashless, 11.0cm, 100/pk
Filter Paper, Grade 541, Quantitative, H ardened, Ashless, 9.0cm, 100/pk
Filter Paper, Grade 541, Quantitative, H ardened, Ashless, 7.0cm, 100/pk
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Filter Paper, Grade 42, Quantitative, As
Filter Paper, Grade 42, Quantitative, As hless, 24.0cm, 100/pk
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