Whatman 滤膜 6768-1302 Puradisc 13针头式滤器, 0.2m Nylon 2000/盒

Whatman 滤膜 6768-1302 Puradisc 13针头式滤器, 0.2m Nylon 2000/盒 PURADISC 13/0.2 NYL 2000/PK