LabExact
Grade A-E Glass Microfiber Filter, Binderless - 1.0µm, 42.5mm - 100/pk SKU: LE-AE4250

Featuring binderless borosilicate glass microfiber technology delivering exceptional 1.0µm particle retention with 99.98% DOP efficiency (ASTM D-2986)¹ for demanding suspended solids and air monitoring applications. Ultra-pure glass construction eliminates organic contamination while depth filtration matrix maximizes loading capacity and maintains characteristically fast flow rates. Hydrophobic surface chemistry resists moisture interference during environmental sampling protocols requiring validated analytical performance.

Key Glass Microfiber Membrane Characteristics

Binderless 100% borosilicate glass construction eliminates extractables and maintains chemical purity for trace analysis applications
Fine 1.0µm porosity achieves precise particle retention while optimizing flow rates for high-volume sampling operations
99.98% DOP collection efficiency (ASTM D-2986)¹ validates retention performance for 0.3µm monodisperse aerosol particles
Hydrophobic surface properties resist water interference and maintain consistent filtration characteristics during ambient air monitoring
Depth filtration matrix traps particulates within random fiber structure, delivering exceptional loading capacity compared to surface membranes

Key Construction Characteristics

Standard 42.5mm diameter accommodates universal filter holders and sampling equipment configurations for laboratory flexibility
Smooth, uniform glass microfibers permit high flow rates while retaining exceptionally small particles through complex void space structure
Binder-free composition ensures thermal stability and eliminates potential interference from strengthening agents during gravimetric analysis
100-pack configuration provides convenient bulk supply for routine environmental monitoring and quality control protocols
Nonsterile format optimized for general laboratory applications requiring cost-effective, high-performance depth filtration media

Grade A-E filters excel in EPA Methods 2540C and 2540D testing² for dissolved and suspended solids analysis, accelerating your water quality assessments with validated analytical protocols. Outstanding chemical inertness maximizes compatibility with aggressive solvents and acidic solutions, while exceptional wet strength maintains filter integrity during extended sampling operations. These versatile filters transform complex environmental monitoring challenges into reliable analytical procedures, providing performance assurance for suspended solids determination, air pollution monitoring, and membrane prefilter applications demanding both precision and analytical consistency.

¹ ASTM D2986 Standard Practice for Evaluation of Air Assay Media by DOP Smoke Test: https://www.astm.org/d2986-95r04.html
² EPA Methods 2540C & 2540D for Water Quality Testing: https://www.epa.gov/cwa-methods