1, look at the color. The true diatom mud is soft, evenly distributed, with a matt color and a muddy effect. The fake diatom mud will have a shiny surface, the color is too bright, and it has a glaring feeling. It is easy to discolor and color for a long time.
2, test the feeling. Really diatom mud feels delicate and feels pine. The texture pattern is fine, smooth and generous, and the artistic impact is strong. The fake diatom mud is rough and hard to touch, like cement and sandstone, and its texture pattern is rigid and stiff.
3, see the water absorption. Since the true diatom mud has the characteristics of a porous, "molecular sieve" structure, it is proved to have abundant pores by spraying water on the diatom mud wall. Take a 2 liter large watering can and spray the water repeatedly on the diatom mud wall. The water on the real diatom mud wall will be absorbed quickly. Gently touch the water spray wall with the palm of your hand. The phenomenon of falling mud, falling off, falling off, etc., also gives off a faint scent of earth. When the fake "diatom mud" wall is sprayed with water, the water will flow down the wall, and the amount of water absorption is extremely small and cannot be repaired.