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Merck
Whatman® glass microfiber filters, Grade 934-AH® RTU circles, diam. 42.5 mm, barcoded aluminium pan

Whatman® glass microfiber grade 934-AH RTU filter discs 1.5 μm pore size

Whatman® glass microfiber filters, Grade 934-AH® RTU circles, diam. 42.5 mm, barcoded aluminium pan