Whatman 滤膜 7404-004 Nylon, 尼龙膜 白色平滑, 0.45m 47mm 100/盒

Whatman 滤膜 7404-004 Nylon, 尼龙膜 白色平滑, 0.45m 47mm 100/盒 NYL 47MM 0.45uM 100/PK