Whatman 濾膜 UN513UORG UniPrep 非針頭式濾器, 0.45m PTFE 1000/盒

Whatman 濾膜 UN513UORG UniPrep 非針頭式濾器, 0.45m PTFE 1000/盒 UP 0.45uM PTFE 1000/PK