LabExact
Grade Quartz A Microfiber Filter, 2.2µm, 42.5mm, High-Temp SiO2, EPA PM10, 100/Pk SKU: LE-Q4250

Featuring binderless quartz microfiber technology delivering exceptional 99.999% filtration efficiency for high-temperature air monitoring applications. Fine porosity SiO2 construction provides reliable particulate retention for PM10 ambient air monitoring methods while maintaining thermal stability through 1000°C continuous operation. Ultra-high purity quartz glass construction with EPA-compliant performance characteristics ensures accurate processing of acidic gases, aerosols, and combustion emissions requiring validated analytical protocols.

Key Quartz Microfiber Membrane Characteristics

• Binderless quartz construction eliminates organic contamination and maintains chemical purity at extreme temperatures
• 99.999% high purity SiO2 with ultra-low metal content delivers contamination-free results for critical trace analysis
• Exceptional thermal stability withstands continuous operation to 1000°C without degradation or dimensional change
• 2.2µm retention efficiency captures fine particulates while optimizing airflow in high-volume sampling applications
• Hydrophobic surface chemistry resists moisture interference during ambient air and stack gas monitoring

Key Construction Characteristics

• Fine porosity microfiber matrix achieves 99.999% efficiency for 2.20µm particles in air filtration protocols
• Robust tensile strength of 215g/15mm (ASTM D828)¹ ensures handling integrity during filter installation and changeout
• Minimal loss on ignition below 6% validates chemical purity for gravimetric analysis and elemental determinations
• Standard 42.5mm diameter accommodates EPA Method PM10² sampling equipment and universal filter holder configurations
• Autoclavable glass construction enables pre-cleaning protocols for ultra-trace metal analysis applications

LE-Q4250 filters achieve outstanding 1.1-1.35 m³/min flow rates optimized for ambient air monitoring, accelerating sampling cycles during extended monitoring campaigns. Superior chemical resistance to all acidic gases except hydrofluoric acid maximizes analytical flexibility when monitoring corrosive emissions and industrial stack effluents. EPA PM10 compliance² transforms these filters into validated reference-grade media, providing performance assurance for critical environmental monitoring and atomic absorption spectroscopy applications demanding both extreme temperature tolerance and certified analytical accuracy.