Whatman 1851-055 Filter Circles, 55mm Dia, Air Sampling Quartz QM-A, 100/pk (PN:1851-055)
QMA 5.5CM 100/PK
Quartz Filters - Grade QM-A Circles, 55 mm 100/pk. High-purity quartz 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.
Also, check out the Ahlstrom 0540-1850 Quantitative Filter Paper, Grade 54, 185 mm
QMA 5.5CM 100/PK
Quartz Filters - Grade QM-A Circles, 55 mm 100/pk. High-purity quartz 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.
Also, check out the Ahlstrom 0540-1850 Quantitative Filter Paper, Grade 54, 185 mm
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