Grade Quartz A High Temperature is a fine porosity binderless quartz (SiO2) glass microfiber with a 99.999% efficiency in air filtration for the retention of 2.20um particles. Effective temperature range up to 1150 °C. This media meets or exceeds the physical, performance and elemental requirements for EPA PM10, Ambient Air Monitoring methods. Flow rate 1.1 - 1.35 m3/min (Resistance 95mmH20@10.5 ft/min). Loss on ignition, <2%. Tensile strength: 285g/ 15mm (ASTM D828), MD tensile is 11.3 lbs/in (TAPPI T494). Primarily used in air pollution monitoring, atomic absorption spectroscopy, flame emission spectrometry and other applications where an extremely critical analysis is needed. Ideal for use in acidic gases (except Hydrofluoric) and aerosols, stacks and flue gas monitoring.