Whatman 滤膜 6786-1302 Puradisc13针头滤器0.2m无菌Nylon 50/盒

Whatman 滤膜 6786-1302 Puradisc13针头滤器0.2m无菌Nylon 50/盒 PURADISC 13/0.2 NYL S 50/PK