How many grams of sodium chloride are required to render 100ml of a 1% solution of apomorphine hydrochloride isotonic with blood serum? use the four studied methods of isotonicity calculation (fpd, sodium chloride equivalent, white vincent method and sprowl's method). the required values for calculation are indicated below fpd of apomorphine hydrochloride is 0.08 fpd of nacl is 0.58 e value of apomorphine hydrochloride is 0.14 e-value of naci is 1 v value of apomorphine hydrochloride is 4.7 1. ereczing point depression method 2sodium chloride. equivalent method 3. white vincent meth od 4-sproul hethod