Whatman 滤膜 6779-0402 Puradisc 4针头式滤器, 0.2m PVDF 100/盒

Whatman 滤膜 6779-0402 Puradisc 4针头式滤器, 0.2m PVDF 100/盒 PURADISC 4/0.2 PVDF 100/PK