Whatman 滤膜 6746-2502 Puradisc 25针头式滤器, 0.2m PVDF 50盒

Whatman 滤膜 6746-2502 Puradisc 25针头式滤器, 0.2m PVDF 50盒 PURADISC 25/0.2 PVDF 50/PK