stirring gently until the ammonium sulfate is completely dissolved. Cool, adjusting the pH of the solution to pH 5,2 1M H 2 SO using 4.
mpole kuchochea mpaka sulphate amonia ni kufutwa kabisa. Cool, kurekebisha pH ya ufumbuzi wa pH 5,2 1m kwa kutumia H 2 SO 4.