Qualitative Filter Paper
滤纸由经过盐酸和氢氟酸处理的纯纤维素制成，具有良好的保留能力和流速，适用于过滤操作。这些纤维素滤纸垂直于液体或气流形成半透性屏障，用于从液体或空气中分离细小物质。根据实验需求，有多种等级的滤纸可供选择，从粗略到精细颗粒过滤均可适用。Avantor 提供各种定性和定量滤纸，具有不同孔径、颗粒截留能力、流速和过滤时间。
VWR® Laboratory Grade Filter Papers
Supplier: VWR BRAND PRIVATE LABEL USA
VWR® filter papers are high-performance cellulose-based filtration materials designed for accurate and reproducible separations in laboratory settings. Available in both qualitative and quantitative grades, these papers deliver consistent retention, flow rate, and purity across a wide range of scientific applications. Whether used in gravimetric analysis, sample cleanup, or routine laboratory workflows, VWR® filter papers provide the reliability and technical precision demanded by today's researchers.
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定性滤纸
Supplier: VWR Collection
These highly pure filter paper grades are produced from cellulose fibers with an alpha-cellulose content of nearly 100%, in accordance with precise quality standards. The ash content is approximately 0.06%.
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定性滤纸，410级
Supplier: VWR BRAND PRIVATE LABEL USA
可过滤铜(I)氧化物、硫酸铅、硫酸钡、碳酸锰等，适合于非常难的酒精澄清和过滤。
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Application specific filter papers, Fritware®, SP Bel-Art
Supplier: Bel-Art Products, a Part of SP
These HDPE sheets can be cut, sawed, formed, machined and welded to fabricate special items.
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Qualitative filter papers, wet strengthened grades, grade 91, Whatman™
Supplier: CYTIVA WHATMAN
A general purpose creped cellulose filter for less critical routine analysis. Widely used to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration.
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Qualitative filter papers, standard grades, grade 604 ½, Whatman™
Supplier: CYTIVA WHATMAN
Grade 604½ Qualitative Filter Papers for coarse precipitates. Maintains flow rate due to the reduction in filter paper contact with funnel side and the self-supporting shape of the filter itself.
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Application specific filter papers, grade 0790 ½, Whatman™
Supplier: CYTIVA WHATMAN
Acid washed cellulose filter paper with ash content of approximately 0,01%, low magnesium, for the determination of trace elements (Mg, Mn, Co, Cu, Mo, B).
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Grade 520 a filter papers for technical use, Whatman™
Supplier: CYTIVA WHATMAN
A thin paper with great wet strength and a very high flow rate. Frequently used in technical applications such as the filtration of viscous liquids and emulsions (e.g., sweetened juices, spirits and syrups, resin solutions, oils, or plant extracts).
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Qualitative filter papers, standard grades, grade 602 eh and 602 eh ½, Whatman™
Supplier: CYTIVA WHATMAN
Grade 602EH and 602EH½ Qualitative Filter Papers for very fine precipitates.
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Grade 113V qualitative filter papers, fluted, Whatman™
Supplier: CYTIVA WHATMAN
Cytiva's Whatman Grade 113V creped filter paper, for use with a conical filter funnel, offers fast filtration and high loading capacity for analysis involving coarse particles or gelatinous precipitates.
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Grade 602 h ½ qualitative filter papers, Whatman™
Supplier: CYTIVA WHATMAN
A dense prepleated filter paper for collecting very small particles and removing fine precipitates.
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Grade 0858 ½ qualitative filter papers, Whatman™
Supplier: CYTIVA WHATMAN
Grained, with medium fast flow rate and medium retention. A universal filter paper, used for the filtration of extracts, oils, beer, syrups etc. Also applied in filter presses or for the aspiration of liquids.
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Application specific filter papers, grade 72, Whatman™
Supplier: CYTIVA WHATMAN
Grade 72 activated carbon air filter paper is designed for air pollution monitoring of radioactive iodine in medical and nuclear installations.
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Qualitative filter papers, wet strengthened grades, grade 93, Whatman™
Supplier: CYTIVA WHATMAN
These cellulose filter papers are intermediate in speed and retention between grades 1 and 4.
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Grade 2294 filter papers for technical use, Whatman™
Supplier: CYTIVA WHATMAN
A very thick filter card with high wet strength. Offers very high flow rate and retains medium to coarse particles.
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Filter papers for healthcare applications, grade 470, Whatman™
Supplier: CYTIVA WHATMAN
These filter papers can be used for the absorption of culture media, as a blotting paper, for electrophoresis and amino acid chromatography.