Whatman 滤膜 10401112 NC45硝酸纤维素膜,圆型, 0.45m, 47mm 100/盒

Whatman 滤膜 10401112 NC45硝酸纤维素膜,圆型, 0.45m, 47mm 100/盒 NC45 0.45uM 47MM 100/PK