双层 Florisil^®/Na₂SO₄ 固相萃取管

双层 Florisil^®/Na₂SO₄ 固相萃取管, polypropylene hardware, PE frit, bed A 2 g (Florisil^®), bed B 2 g (Na₂SO₄), volume 6 mL, pk of 48

双层 Florisil^®/Na₂SO₄ 固相萃取管, glass hardware, PTFE frit, bed A 2 g (Florisil^®), bed B 2 g (Na₂SO₄), volume 6 mL, pk of 48