Whatman 滤膜 6783-0404 Puradisc 4针头式滤器, 0.45m PTFE 500/盒

Whatman 滤膜 6783-0404 Puradisc 4针头式滤器, 0.45m PTFE 500/盒 PURADISC 4/0.45 PTFE 500/PK