(1) BCA試劑的配制① 試劑A,1L:分別稱取10g BCA (1%),20g Na2CO3·H2O(2%),1.6g Na2C4H4O6·2H2O(0.16%),4g NaOH (0.4%) ,9.5g NaHCO3(0.95%) ,加水至1L,用NaOH或固體NaHCO3調節pH值至11.25。