Cytiva's Whatman™ 1851-101 Grade QM-A Quartz Microfiber Filter (Pack of 100)

Cytiva's Whatman™ high purity quartz (SiO2) microfiber filters are used for air sampling in acidic gases stacks flues and aerosols particularly at high temperatures up to 500°C and in PM-10 testing. Because of the low level of alkaline earth metals ""artifact"" products of sulfates and nitrates (from SO2 and NO2) are virtually eliminated. QM-A sequentially numbered according to EPA standards is suitable for most applications. Diameter: 10.16cm. 100/Pack. Cytiva's Whatman™#: 1851-101.