Whatman 滤膜 6798-2502 Puradisc 25针头式滤器, 0.2m PTFE 1000/盒

Whatman 滤膜 6798-2502 Puradisc 25针头式滤器, 0.2m PTFE 1000/盒 PURADISC 25/0.2 PTFE 1000/PK