KCl,KNO3,NH4Cl\mathrm{KCl}, \mathrm{KNO}_{3}, \mathrm{NH}_{4} \mathrm{Cl}KCl,KNO3,NH4Cl
KCl,K2SO4,Na2SO4\mathrm{KCl}, \mathrm{K}_{2} \mathrm{SO}_{4}, \mathrm{Na}_{2} \mathrm{SO}_{4}KCl,K2SO4,Na2SO4
KCl,NH4Cl,Na2CO3\mathrm{KCl}, \mathrm{NH}_{4} \mathrm{Cl}, \mathrm{Na}_{2} \mathrm{CO}_{3}KCl,NH4Cl,Na2CO3
KCl,NH4Cl,NaNO3\mathrm{KCl},{\mathrm{NH}}_{4} \mathrm{Cl}, \mathrm{NaNO}_{3}KCl,NH4Cl,NaNO3