如何計算稀釋溶液的濃度?? 具體的話就是這樣: (1)取5ml的溶液加水稀釋到25ml. 1000μg/ml * 5ml / 25ml = 200μg/ml. (2)再由(1)取20ml稀釋到25ml.
確定! 回上一頁