Whatman 滤膜 6753-2502 Puradisc 25针头式滤器, 0.2m Nylon 1000/盒

Whatman 滤膜 6753-2502 Puradisc 25针头式滤器, 0.2m Nylon 1000/盒 PURADISC 25/0.2 NYL 1000/PK