Cellulose Filter Paper Discs, Qualitative, Very Slow, 3um, 55mm, 100/Pk
GVS SKU: FP055DXS05QALC01

Featuring a low ash hardened cellulose medium made from refined pulp and pure cotton linters with an alpha-cellulose content of nearly 100%, these 55mm qualitative filter paper discs deliver the lowest filtration rate in the GVS qualitative range together with the maximum degree of fine particle retention. The very slow grade provides a nominal retention range of 3 to 5um and a thickness of 0.17mm, making it suited to the most demanding clarifications. Each box contains 100 discs supplied nonsterile.

Key Cellulose Media Characteristics

• Constructed from refined pulp and pure cotton linters with an alpha-cellulose content of nearly 100% for consistent qualitative performance.
• Very slow filtration speed delivers the maximum degree of fine particle filtration and retention across the qualitative range.
• Low ash content of less than 0.06%, which is achieved without post-treatment.
• Naturally hydrophilic depth structure entraps particulate within the random matrix of cellulose fibers.
• Suited to extra fine-grained precipitates and liquids that are difficult to clarify.

Key Construction Characteristics

• 55mm diameter disc format for standard analytical funnels and Buchner filtration.
• Nominal retention range of 3 to 5um for fine precipitate capture.
• Nominal thickness of 0.17mm (170um).
• Supplied nonsterile, 100 discs per box.

This very slow qualitative grade maintains reliable separation when working with the finest precipitates and hard-to-clarify liquids. The depth medium provides dependable particulate capture while preserving sample integrity for downstream qualitative analysis.

Color

White

Diameter

55mm

Flow Speed

Very Slow

Grade

DXS05

Hardened (Yes/ No)

Yes

Material

Cellulose

Mesh Format

Disc

Nominal Ash Content (%)

<0.06

Nominal Thickness (µm)

170

Pack Count

100

Particle Retention

3-5um

Pore Size (µm)

3

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wettability

Hydrophilic

• Fine Precipitate Filtration Captures extra fine-grained precipitates such as barium sulphate and cupreous oxide where maximum retention is required.
• Difficult Clarifications Provides very slow, high-retention filtration for liquids that are hard to clarify, including wine.
• Qualitative Analysis Used in qualitative analytical techniques to determine and identify materials within liquids and gases.
• Buchner Funnel Filtration The hardened cellulose disc withstands vacuum and pressure filtration in Buchner funnel setups.
• Fine Particle Removal Entraps fine particulate within the depth of the cellulose matrix for sample clarification before analysis.