Whatman 滤膜 10407314 ME25/21白色连体混酯膜0.45m黑色网格灭菌50mm/400

Whatman 滤膜 10407314 ME25/21白色连体混酯膜0.45m黑色网格灭菌50mm/400 ME25/21 STL 0.45uM 50MM 400/PK