尼龙网滤膜

尼龙网滤膜, Millipore, filter diam. 47 mm, hydrophilic

尼龙网滤膜, Millipore, filter diam. 25 mm, hydrophilic

尼龙网滤膜, Millipore, filter diam. 90 mm, hydrophilic

尼龙网滤膜, Millipore, 30 cm x 3 m, hydrophilic