Quantitative Filter Paper, Grade 540, Hardened Ashless, 8um, 125mm, 100/Pk
GVS SKU: FP125DF540QANC01

Featuring a high-purity, acid-treated cellulose medium, this Grade 540 hardened ashless quantitative filter paper delivers reliable performance for critical gravimetric and analytical filtration. Supplied as 125mm circles in packs of 100, the hydrophilic paper provides a nominal particle retention in the medium range with a correspondingly medium flow rate, making it a versatile choice for laboratory sample preparation. The acid-hardening treatment produces high wet strength and broad chemical resistance, allowing the tough surface to withstand strong acids and alkalis while resisting tearing during handling.

Key Filter Paper Media Characteristics

• Hardened ashless cellulose: acid treatment reduces ash to an extremely low level for accurate gravimetric work.
• Hydrophilic surface: wets readily with aqueous samples for consistent filtration.
• High wet strength: the acid-treated surface resists tearing and permits scraping of precipitates from the paper.
• Broad chemical resistance: withstands strong acid and alkali solutions encountered in analytical filtration.
• Medium retention and flow rate: a balanced combination suited to a wide range of routine quantitative procedures.

Key Construction Characteristics

• Format: 125mm diameter circles.
• Quantitative grade: Grade 540, hardened ashless, for gravimetric analysis.
• Nonsterile: supplied ready for general laboratory use.
• Pack: 100 circles per pack.

This filter paper maintains sample integrity throughout demanding analytical workflows, providing the purity and mechanical strength required for quantitative results. Its hardened surface supports clean recovery of precipitates, while consistent retention ensures repeatable performance across batches.

Diameter

125mm

Grade

540

Hardened (Yes/ No)

Yes

Material

Cellulose

Mesh Format

Circle

Pack Count

100

Particle Retention

8 um

Pore Size (µm)

7.0-12.0

Qualitative/ Quantitative

Quantitative

Sterility

Nonsterile

Wettability

Hydrophilic

Whatman Equivalent

Grade 540

• Gravimetric Metal Analysis Frequently used in the gravimetric analysis of metals in acidic or alkaline solutions where extremely low ash content is essential.
• Hydroxide Collection Suited to collecting hydroxides after precipitation by strong alkalis thanks to its high chemical resistance.
• Buchner Funnel Filtration The hardened surface withstands vacuum filtration and allows precipitates to be scraped cleanly from the paper.
• Quantitative Sample Preparation Provides medium retention and flow for preparing samples ahead of instrumental analysis.
• Acid and Alkali Filtration Broad chemical resistance enables filtration of strongly acidic or alkaline samples without paper degradation.
• Critical Analytical Filtration The tough, high wet strength surface supports a wide range of demanding analytical filtration procedures.