37mm QM-A Grade Quartz Microfiber Filters, 100/pk SKU: TE-QMA-37

The TE-QMA-37 features high-purity quartz microfiber filters designed for air sampling in acidic gases, stacks, flues, and aerosols. These Grade QM-A filters are specifically suitable for PM-10 sampling and analysis, providing reliable particulate collection for EPA-compliant ambient air quality monitoring applications.

Technical Performance

Constructed from high-purity quartz (SiO&sub2;) microfiber material, these filters deliver 99.995% DOP retention efficiency with a 2.2 µm pore size. The filters operate effectively at high temperatures up to 500°C, while some sources indicate temperature resistance up to 800°C for extreme conditions.

Key Specifications

• Diameter: 37mm (3.7cm)
• Pore size: 2.2 µm
• Material: High-purity quartz (SiO&sub2;) microfiber
• Grade: QM-A
• Pack count: 100 filters per package
• Maximum operating temperature: 500°C to 800°C
• DOP retention efficiency: 99.995%

Low Artifact Design

Due to the low level of alkaline earth metals, "artifact" products of sulfates and nitrates (from SO&sub2; and NO&sub2;) are virtually eliminated. This makes the high-purity quartz microfiber filters applicable for particulate monitoring and heavy metal analysis where sample contamination must be minimized.

EPA Compliance

QM-A filters are sequentially numbered according to U.S. Environmental Protection Agency (EPA) standards and are suitable for most applications. These filters support compliance with 40 CFR Part 50, Appendix J for PM10 reference method monitoring.

Applications

The TE-QMA-37 filters are ideal for ambient air quality monitoring, source emission testing, and environmental compliance sampling. They can be used in both atomic absorption and flame emission spectrometry for comprehensive particulate analysis in regulatory monitoring programs.