LabExact
Grade CFP43 Quantitative Ashless Cellulose Filter Paper, 16µm, 42mm, <0.01% Ash, 100/Pk SKU: LE-CFP43-042

Featuring quantitative ashless cellulose technology delivering intermediate retention and flow characteristics optimized for gravimetric analysis applications. Ultra-refined alpha-cellulose construction with <0.01% ash content ensures precision in quantitative analytical procedures while maintaining consistent 16µm particle retention for soil analysis, surface water testing, and air sample monitoring protocols. Acid-treated manufacturing process reduces ash content to levels essential for accurate gravimetric determinations, delivering contamination-free results when analytical precision is critical.

Key Cellulose Membrane Characteristics

Refined pulp and linters construction with virtually 100% alpha-cellulose content delivers exceptional purity and chemical stability
Extremely low ash content of <0.01% eliminates interference in gravimetric analysis and provides reliable analytical baseline performance
Medium retention efficiency for 15-17µm particles optimizes separation of fine particulates while maintaining practical flow rates
Hydrophilic surface chemistry ensures consistent wetting characteristics and predictable filtration behavior across diverse sample matrices
Guaranteed freedom from residual acids used in production methods prevents contamination of sensitive analytical samples

Key Construction Characteristics

Standard 42mm diameter configuration accommodates EPA Method 160.2¹ procedures and universal laboratory filter holder systems
Thickness of 0.210mm provides structural integrity for vacuum filtration while maintaining optimal porosity characteristics
Compatible with Buchner funnels and pressure filtration systems for versatile laboratory applications
Nonsterile presentation suitable for routine analytical applications where sterility is not required
Convenient 100-count packaging ensures consistent supply for high-volume laboratory operations

Grade CFP43 filters achieve reliable intermediate performance positioned between fast and slow quantitative grades, making them ideal for soil analysis, foodstuffs analysis, and particle collection in air pollution monitoring applications. Outstanding versatility for separating solid matter from aqueous extracts in general soil analysis and fat/oil determinations in water testing protocols maximizes your analytical flexibility across diverse environmental and industrial testing applications. EPA Method 160.2 compatibility¹ transforms these filters into validated analytical media, providing performance assurance for your critical suspended solids determinations and gravimetric analytical procedures requiring both precision and reliability.

¹ EPA Method 160.2 - Residue, Non-Filterable (Gravimetric): https://www.epa.gov/esam/epa-method-1602-residue-non-filterable-gravimetric-dried-103-105deg-c