Whatman 滤膜 6750-2510 Puradisc 25针头式滤器, 1.0m Nylon 50/盒

Whatman 滤膜 6750-2510 Puradisc 25针头式滤器, 1.0m Nylon 50/盒 PURADISC 25/1.0 NYL 50/PK