Appearance Characteristics Of Different Types Of Feed Additives

Vitamin A: light brown or grayish yellow granules
Vitamin E: white or light yellow powder
Sodium selenite: white powder
Vitamin K3: white or grayish yellow crystalline powder
Vitamin B1: white crystals or crystalline powder, slightly smelly, slightly bitter
Vitamin B2: yellow or orange-yellow crystalline powder, bitter
Ferrous sulfate: dark blue precipitate
Magnesium sulfate: white precipitate