Cellulose Qualitative Filter Paper Discs, Grade 02 Medium-Slow, 42mm, 100/Pk
GVS SKU: FP042DMS02QALC01

Featuring a hardened, low ash cellulose medium made of refined pulp and pure cotton linters with an alpha-cellulose content of nearly 100%, this Grade 02 (DMS02) qualitative filter paper disc delivers medium-slow filtration with reliable fine particle retention. Each 42mm disc provides a nominal retention range of 7 to 8 microns and a nominal thickness of 190 microns, making it slightly more retentive and absorbent than a standard Grade 01 paper. The nominal basis weight is 100 g/m2, and the ash content stays below 0.06% without post-treatment.

Key Cellulose Media Characteristics

• Hardened, low ash cellulose medium with an alpha-cellulose content of nearly 100% for consistent, reproducible filtration.
• Medium-slow filtration speed balances throughput with fine particle retention for difficult-to-clarify samples.
• Nominal particle retention of 7 to 8 microns captures fine precipitates such as lead dioxide, calcium fluoride, nickel sulphide and zinc sulphide.
• Hardened structure provides increased wet strength for handling during folding and funnel use.
• Ash content below 0.06% minimizes contamination and supports quantitative work.

Key Construction Characteristics

• Cellulose (refined pulp and cotton linters) construction in a 42mm circular disc format.
• Nominal thickness of 190 microns with a nominal basis weight of 100 g/m2.
• Hardened, low ash qualitative grade suitable for folding as an analytical funnel filter.
• Supplied nonsterile, 100 discs per pack.

This disc maintains consistent flow and retention across routine qualitative separations, supporting accurate identification of materials and dependable sample preparation. The hardened, low ash structure withstands wet handling while protecting sample integrity for analytical work.

Diameter

42mm

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

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wettability

Hydrophilic

Whatman Equivalent

Grade 2

• Fine Precipitate Filtration Captures fine precipitates such as lead dioxide, calcium fluoride, nickel sulphide and zinc sulphide during qualitative analysis.
• Soil Analysis Provides medium-slow, reproducible filtration suited to soil testing workflows.
• Atmospheric Contaminant Monitoring Used for monitoring specific contaminants in the atmosphere, including dust collection and stain measurement.
• Qualitative Analytical Separations Serves as a folded funnel filter for routine qualitative determination and identification of materials.
• Liquid Clarification Clarifies samples that are difficult to filter while retaining fine particulates.
• General Laboratory Filtration Supports a wide range of routine bench filtration tasks requiring medium retention.