Whatman 滤膜 800350 Nuclepore 聚碳酸酯膜 0.4m 300mm x 50m 1/盒

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Whatman 滤膜 800350 Nuclepore 聚碳酸酯膜 0.4m 300mm x 50m 1/盒 NUC 300MMX50M 0.4uM 1/PK NOMU