Cellulose Qualitative Filter Paper Discs, Grade 02, 7-8um, 55mm, Medium-Slow, 100/Pk
GVS SKU: FP055DMS02QALC01

Featuring a low ash, hardened cellulose medium with a nominal particle retention range of 7 to 8 microns, these Grade 02 (DMS02) qualitative filter paper discs deliver medium-slow filtration across a 55mm diameter format. The paper is slightly more retentive and more absorbent than Grade 01, providing dependable capture of fine precipitates during routine analytical separations. Each pack contains 100 discs.

Key Cellulose Media Characteristics

• Nominal particle retention: 7 to 8 microns for reliable capture of fine precipitates.
• Medium-slow filtration speed: slightly more retentive and absorbent than Grade 01, with a correspondingly moderate to slow flow.
• Low ash content: less than 0.06%, supporting clean separations and minimal sample contamination.
• Hardened cellulose construction: made from refined pulp and pure cotton linters with high alpha-cellulose content for enhanced mechanical strength.
• Hydrophilic medium: wets readily for consistent aqueous filtration.

Key Construction Characteristics

• Material: cellulose (low ash, hardened qualitative grade).
• Diameter: 55mm disc format.
• Nominal thickness: 190 microns.
• Nominal basis weight: 100 g/m².
• Pack: 100 discs per box, nonsterile.

The medium-slow flow and 7 to 8 micron retention provide consistent, reproducible separations for monitoring atmospheric contaminants, soil testing, and the filtration of fine precipitates. The hardened, high alpha-cellulose structure withstands routine handling and is well suited to folded use in analytical funnels, helping maintain sample integrity throughout the workflow.

Color

White

Diameter

55mm

Flow Speed

Medium-Slow

Grade

DMS02 (Grade 02)

Hardened (Yes/ No)

Yes

Material

Cellulose

Mesh Format

Circle

Nominal Ash Content (%)

<0.06

Nominal Basis Weight (g/ m²)

100

Nominal Thickness (µm)

190

Pack Count

100

Particle Retention

7-8 µm

Pore Size (µm)

7-8

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wettability

Hydrophilic

Whatman Equivalent

Grade 2

• Fine Precipitate Filtration The 7 to 8 micron retention captures fine precipitates such as lead dioxide, calcium fluoride, nickel sulphide, and zinc sulphide.
• Atmospheric Contaminant Monitoring Medium-slow flow supports the collection and monitoring of specific contaminants in air pollution sampling.
• Soil Analysis and Testing The absorbent, hardened paper is well suited to soil testing and related agricultural sample preparation.
• Routine Qualitative Separations The Grade 02 cellulose medium serves general qualitative analytical separations in routine laboratory work.
• Folded Funnel Filtration The hardened structure performs well as a folded filter within analytical funnels for clarifying liquids.
• Plant Growth and Nutrient Studies Extra absorbency makes the paper useful for holding nutrient solutions in plant growth trials.