Whatman 滤膜 6809-7023 Anodisc无机膜, 13mm 0.2m 不带支撑 100/盒

Whatman 滤膜 6809-7023 Anodisc无机膜, 13mm 0.2m 不带支撑 100/盒 ANOD 13MM 0.2uM NO SUP 100/PK