LabExact
Grade F Glass Microfiber Filter, Binderless - 0.7µm, 42.5mm, Medium Flow, 100/pk SKU: LE-F4250

Featuring binderless borosilicate glass microfiber technology delivering exceptional 0.7µm particle retention with optimized medium flow characteristics for demanding analytical applications. Advanced depth filtration matrix achieves precise separation of fine precipitated proteins, including immunoglobulins, while maintaining superior chemical resistance to strong oxidizing agents, acids, and alkaline solutions. Grade F construction provides reliable pre-filtration performance for laser spectroscopy sample preparation and EPA Method 1311 TCLP analysis¹ applications requiring validated particulate removal protocols.

Key Glass Microfiber Membrane Characteristics

Binderless borosilicate glass construction eliminates organic contamination and maintains thermal stability throughout extended analytical procedures
0.7µm pore size delivers precise retention of fine precipitated materials while optimizing flow rates for high-volume sample processing
100% glass microfiber matrix provides exceptional chemical compatibility with aggressive solvents, acids, and oxidizing agents used in analytical chemistry
Smooth, uniform fiber structure enables characteristically high flow rates while achieving superior small particle retention and exceptional load capacity
Hydrophobic surface properties resist moisture interference and maintain consistent filtration performance in aqueous analytical applications

Key Construction Characteristics

Depth filtration design traps particulate within the random matrix structure, delivering reliable separation through the complete filter thickness
42.5mm diameter accommodates standard analytical filter holders and provides optimal surface area for medium-volume sample processing applications
Medium flow rate configuration balances efficient throughput with thorough particle retention for analytical sample preparation protocols
Complex void space architecture develops superior efficiency ratings while maintaining consistent performance across extended filtration cycles
Nonsterile format optimized for general laboratory analytical applications where sterility validation is not required

LE-F4250 filters deliver reliable performance for pre-filtration applications ahead of laser spectroscopy analysis, effectively removing interfering particulate while preserving sample integrity for accurate optical measurements. Outstanding chemical resistance to diluted aqueous solutions containing strong oxidizing, acidic, or alkaline components maximizes analytical flexibility when processing challenging sample matrices. TCLP-compatible construction¹ transforms these filters into validated analytical tools, providing performance assurance for environmental testing and waste characterization applications demanding both exceptional particle retention and proven regulatory compliance.

¹ EPA SW-846 Test Method 1311 - Toxicity Characteristic Leaching Procedure: https://www.epa.gov/hw-sw846/sw-846-test-method-1311-toxicity-characteristic-leaching-procedure