Whatman 滤膜 6781-2504 Puradisc 25针头式滤器, 0.45m聚醚砜 200/盒

Whatman 滤膜 6781-2504 Puradisc 25针头式滤器, 0.45m聚醚砜 200/盒 PURADISC 25/0.45 PES 200/PK