LabExact
Grade CFP44 Quantitative Ashless Cellulose Filter Paper, 3µm, 90mm, Slow Flow, 100/Pk SKU: LE-CFP44-090

Featuring refined cotton pulp cellulose construction delivering exceptional gravimetric analysis performance for laboratory applications requiring precise separation of fine precipitates. Grade CFP44 demonstrates a slightly wider retention rate than CFP42 within a similar slow flow rate, making it ideal for analysis of samples requiring separation of very fine precipitates. 3µm nominal retention with extremely low ash content below 0.01% ensures contamination-free results for quantitative analytical procedures demanding validated purity standards.

Key Quantitative Cellulose Membrane Characteristics

Manufactured from refined pulp and alpha linters with acid washing treatment delivering superior analytical purity
Ultra-low ash content below 0.01% eliminates interference in gravimetric analysis and spectrophotometric procedures
Precise 0.165mm thickness with 85 g/m² basis weight provides consistent filtration performance
Cotton furnish with ashless finish delivers exceptional chemical compatibility for analytical applications
Hydrophilic surface chemistry ensures rapid wetting and uniform filtration across the entire membrane surface

Key Construction Characteristics

Random matrix cellulose fiber construction entraps particulates within the media depth for reliable separation
1.5-3.5 µm retention range with slow flow characteristics optimizes fine precipitate capture
Standard 90mm diameter accommodates universal funnel configurations and standard laboratory filter holders
Nonsterile grade suitable for routine analytical procedures requiring cost-effective quantitative filtration
FDA-grade manufacturing capabilities ensure consistent quality for food analysis and regulatory compliance applications

LE-CFP44-090 filters excel in standard environmental test procedures including soil sample analysis, trace element collection, and radionuclide monitoring in air samples, while supporting liquid food testing for sediment determination and primary analysis of cements and slurries. Outstanding performance in sample preparation prior to spectrophotometry accelerates your analytical workflows when processing samples requiring validated quantitative separation. Whatman 1444-090 and Sartorius FT-3-103-090 equivalent specifications ensure seamless integration with existing laboratory protocols, maximizing your analytical flexibility while maintaining certified performance standards for critical gravimetric analysis applications.