Identification of the naked eye, high-quality bentonite was pure white, usually gray or yellowish white, often due to water or impurities with light green, light green, rose red and other colors. After the air is still pure white, gray or yellowish white. Broken hand after breaking the cross section is not smooth, but was jelly-like. Greasy luster, hand touch with slippery feeling. Water swelling, good can become colloidal. If the long-term dry water loss, but also become loose like.
Bentonite absorbs or absorbs various colors because of its strong ion exchange capacity. Mix it with grease to make the grease more slippery. Its fine powder water suspension, dispersion (dispersion) is good, not easy to precipitate.
Natural bentonite type, mainly based on the relative content of the type of cation of the montmorillonite is divided into calcium, sodium, hydrogen, hectorite, etc., of which calcium-based montmorillonite clay called calcium bentonite. Most of our bentonite to calcium-based bentonite-based calcium-bentonite bentonite cheaper than sodium, but also easy to hand, so we in the broiler and laying hen tests, are used in calcium-based soil. Add material with bentonite feed chicken, because palatability, chicken love to eat.