Mayer’s test
Cream or yellow ppt
+ alkaloids
Dragendorff’s test
Reddish brown or orange
+ alkaloids
Wagner’s test
Reddish brown or brown ppt
+ alkaloids
Hager’s test
Yellow ppt
+ alkaloids
Van-urk’s test
Blue color
+ indole alkaloids
Vitali morin test
Coloration
+ alkaloids
Thalleoquin test
Emerald green color
+ quinoline alkaloid