Quantitative Filter Paper, Ashless, 185mm, Grade DMS40, 7-9um Retention, Medium-Slow, 100/Pk
GVS SKU: FP185DMS40QANC01

Featuring a refined cellulose depth medium made from purified pulp and cotton linters with virtually 100% alpha-cellulose content, this 185mm ashless quantitative filter paper delivers reliable performance in gravimetric and analytical work. Designated Grade DMS40, it provides a medium-slow filtration speed with a nominal particle retention range of 7 to 9 microns, and its hydrophilic structure wets readily for consistent throughput. With an ash content of less than 0.007 percent, it leaves minimal residue after ignition, supporting accurate quantitative measurements.

Key Cellulose Media Characteristics

• Manufactured from refined pulp and pure cotton linters with an alpha-cellulose content of virtually 100 percent
• Ashless designation with an ash content of less than 0.007 percent for low background contamination
• Nominal particle retention range of 7 to 9 microns with a medium-slow filtration speed
• Naturally hydrophilic depth structure that wets quickly and supports steady flow
• Suitable for Buchner funnels and filtration under pressure

Key Construction Characteristics

• 185mm diameter circles for use in larger funnels and gravimetric setups
• Cellulose construction with a nominal thickness of 170 microns and a basis weight of 85 grams per square meter
• Nonsterile format supplied 100 discs per pack

This grade is designed for quantitative analysis, sample preparation, and gravimetric determinations where consistent retention and low residue are essential. The depth medium maintains sample integrity across routine and demanding filtrations, providing dependable separation of fine precipitates. Its broad applicability makes it a practical standard for analytical laboratory filtration.

Color

White

Diameter

185mm

Flow Speed

Medium-Slow

Grade

DMS40

Material

Cellulose

Nominal Ash Content (%)

<0.007

Nominal Basis Weight (g/ m²)

85

Nominal Thickness (µm)

170

Pack Count

100

Particle Retention

7-9 um

Pore Size (µm)

7

Qualitative/ Quantitative

Quantitative

Sartorius Equivalent

5B

Sterility

Nonsterile

Wettability

Hydrophilic

Whatman Equivalent

40

• Gravimetric Analysis The ashless construction with under 0.007 percent ash leaves negligible residue after ignition for accurate weight determinations.
• Quantitative Precipitate Filtration The 7 to 9 micron retention with medium-slow flow captures fine precipitates such as those formed in classical analytical separations.
• Sample Preparation The 185mm format and consistent cellulose medium support clarification and preparation of samples for downstream analysis.
• Buchner Funnel Filtration The mechanical strength of the medium suits vacuum filtration in Buchner funnels and filtration under pressure.
• General Analytical Filtration The hydrophilic depth structure provides dependable separation for routine quantitative laboratory work.