Whatman 滤膜 10401131 NC45硝酸纤维素膜,圆型, 0.45m 142mm 25/盒

Whatman 滤膜 10401131 NC45硝酸纤维素膜,圆型, 0.45m 142mm 25/盒 NC45 0.45uM 142MM 25/PK