Cellulose Filter Paper, Quantitative Ashless, Grade 45, Very Fast, 25-30um, 150mm, 100/Pk
GVS SKU: FP150DSL45QANC01

Featuring a refined alpha-cellulose depth medium with very fast flow and a 25 to 30 micron nominal particle retention, this 150mm quantitative ashless filter paper disc is built for rapid clarification of liquids carrying coarse precipitates and gelatinous solids. The acid-washed cellulose construction delivers an exceptionally low ash content of less than 0.007 percent, so it introduces virtually no contaminants during gravimetric analysis. Each disc measures 210 microns thick with a basis weight of 85 grams per square meter, and is supplied nonsterile in packs of 100.

Key Cellulose Media Characteristics

• Naturally hydrophilic refined alpha-cellulose medium that wets out readily with aqueous samples
• Nominal particle retention of 25 to 30 microns for capturing coarse and gelatinous precipitates
• Very fast flow rate that speeds high-throughput and routine filtrations
• Ashless grade with less than 0.007 percent ash content for accurate quantitative and gravimetric work
• Acid-washed cellulose offering broad chemical compatibility for laboratory filtration

Key Construction Characteristics

• 150mm diameter circle format suited to Buchner funnels and standard filter funnels
• Nominal thickness of 210 microns with a basis weight of 85 grams per square meter
• Quantitative ashless Grade 45 cellulose construction
• Supplied nonsterile, 100 discs per pack

This filter paper maintains consistent flow and retention across each disc, supporting repeatable separations and dependable sample integrity. The very fast flow and high loading capacity make it well suited to clarifying heavily loaded samples before downstream analysis. Its ashless purity preserves the accuracy of gravimetric and quantitative results.

Color

White

Diameter

150mm

Flow Speed

Very Fast

Grade

Grade 45 (DSL45)

Material

Cellulose

Membrane Thickness (µm)

210

Mesh Format

Disc

Nominal Ash Content (%)

<0.007

Nominal Basis Weight (g/ m²)

85

Nominal Thickness (µm)

210

Pack Count

100

Particle Retention

25-30 µm

Pore Size (µm)

25

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wettability

Hydrophilic

• Gravimetric Analysis The ashless construction with less than 0.007 percent ash content supports accurate weighing of retained precipitates.
• Coarse Precipitate Filtration The 25 to 30 micron retention captures coarse and gelatinous precipitates such as metal hydroxides.
• Rapid Liquid Clarification The very fast flow rate speeds routine clarification of heavily loaded aqueous samples.
• Buchner Funnel Filtration The 150mm circle format fits Buchner and standard funnels for vacuum and pressure filtration.
• Environmental Sample Prep The high loading capacity makes it useful for preparing soil and water samples prior to analysis.
• Prefiltration The coarse retention and fast flow protect finer downstream membranes from heavy particulate loads.