or
Qma 8.26Cm 100/Pk
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Paper, Filter; Quartz; GE Whatman; Grade QM-A; Circular; Used at 500deg.C; For air sampling in acidic gases, stacks, flues and aerosols; In PM-10 testing; Particle retention: 2.2um; Dia.: 82mm; 450um thick; Weight: 85g/m2
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