Cellulose Qualitative Filter Paper, 25mm, Medium-Slow, 5-7um Retention, 320um Thick, 100/Pk
GVS SKU: FP025DMS03QLTC01

Featuring a refined cellulose depth medium made from refined pulp and pure cotton linters with an alpha-cellulose content of nearly 100%, this 25mm qualitative filter paper disc delivers reliable retention of fine precipitates. The DMS03 medium-slow (thick) grade provides a nominal particle retention of 5 to 7 microns and a substantial 320 micron thickness, roughly double the thickness of a standard medium grade, giving it high loading capacity and a moderate to slow filtration rate. With a low ash content of less than 0.06% that is not reduced by post-treatment, this paper supports clean, repeatable qualitative analytical work.

Key Cellulose Filter Paper Characteristics

• Nominal retention: 5 to 7 micron range captures fine precipitates and suspended particulates.
• Medium-slow (thick) DMS03 grade: double-thickness construction increases dirt-holding capacity for heavily loaded samples.
• Low ash content: less than 0.06%, not reduced by post-treatment, for qualitative gravimetric and analytical procedures.
• High-purity cellulose: refined pulp and pure cotton linters with nearly 100% alpha-cellulose content provide enhanced mechanical strength.
• Hydrophilic medium: wets readily with aqueous solutions and common laboratory liquids.

Key Construction Characteristics

• Format: 25mm circular disc.
• Thickness: 320 microns for increased loading and wet handling strength.
• Pack: 100 discs per box, nonsterile.

This filter paper maintains consistent flow and retention performance across routine qualitative separations, helping protect sample integrity during filtration of fine precipitates. Its thick, high-purity cellulose structure withstands wet handling while delivering dependable clarification for laboratory and analytical applications.

Color

White

Diameter

25mm

Flow Speed

Medium-Slow (Thick)

Grade

DMS03

Hardened (Yes/ No)

Yes

Material

Cellulose

Mesh Format

Circle

Nominal Ash Content (%)

<0.06

Nominal Basis Weight (g/ m²)

200

Nominal Thickness (µm)

320

Pack Count

100

Particle Retention

5-7 µm

Pore Size (µm)

5

Qualitative/ Quantitative

Qualitative

Sterility

Nonsterile

Wettability

Hydrophilic

• Fine Precipitate Filtration The 5 to 7 micron retention range captures fine crystalline and gelatinous precipitates during qualitative analysis.
• Soil Analysis Suited to soil testing procedures where moderate to slow filtration and fine particle retention are needed.
• Air and Atmospheric Monitoring Used as circles or rolls to collect atmospheric dust for stain-intensity or photometric evaluation.
• Qualitative Analytical Separations Supports routine laboratory techniques to determine and identify materials with low ash interference.
• Sample Clarification Clarifies liquids and removes particulates ahead of further analysis or downstream processing.
• Educational Laboratory Work Provides a dependable medium for teaching simple qualitative analytical separations.