I.W. Tremont HT-Q4250 Grade Quartz-A-HT Heat Treated Quartz Glass Microfiber Filter Paper, Ultra Low Metals, 4.25cm Diam, 2.2um , Binderless, Non-Sterile (Pack of 100)

This filter is designed for high-temperature air sampling and trace analysis, including applications such as PM monitoring, stack emissions testing, and environmental analysis. Its high purity and stability make it ideal for sensitive analytical workflows.

Heat treatment removes residual contaminants and stabilizes the filter structure, resulting in ultra-low metal content and improved analytical accuracy. This is especially important for trace metals analysis and regulatory testing, where contamination must be minimized.

The HT-Q4250 filter can withstand extremely high temperatures (over 1150°C), making it suitable for combustion testing, gravimetric analysis, and high-temperature sampling environments.

Being binderless, the filter contains no added resins or adhesives, which reduces extractables and contamination. Combined with high-purity SiO₂ fibers, this ensures clean, reliable results in sensitive laboratory and environmental testing.

The 2.2 µm retention is ideal for capturing fine airborne particulates and aerosols while maintaining good airflow. This balance makes it suitable for both gravimetric measurements and particulate monitoring applications.