Eritromisin:
+HCl + Mayer = endapan + air = tetap
+KMnO4=putih coklat (keruh)
+FeCl3= kuning kehijauan
+bourchadat=hitam
+frohde=putih keruh
+HNO3=kuning muda
+nessler=kuning
+dragendorf=hitam
+diazo A&B + NaOh= gelembung gas putih
+NaOh + HCl+FeCl3= kuning kehijauan
+H2SO4= coklat
