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Merck
Whatman® PTFE membrane filters PTFE membrane circles, (TE 35), 0.2 μm, 25 mm, 50/pk

Whatman® PFTE TE35 filter discs 0.2 μm pore size

Whatman® PTFE membrane filters PTFE membrane circles, (TE 35), 0.2 μm, 25 mm, 50/pk