Whatman 滤膜 6870-2502 GD/X 25针头式滤器, 0.2m Nylon 150/盒

Whatman 滤膜 6870-2502 GD/X 25针头式滤器, 0.2m Nylon 150/盒 GD/X 25/0.2 NYL 150/PK