The 90 ceramic white grinding bowl has a hard and brittle texture, good bowl symmetry, and a bright and smooth surface inside the bowl, which makes it difficult for the ground substance to adhere to the inner surface of the bowl. The ground substance can be evenly distributed in the bowl, which is conducive to further grinding and provides equal grinding opportunities for the ground particles, which is conducive to obtaining fine and uniform powder particles. It is an indispensable accessory in the working process of the grinding machine, which can be used to grind any substance with a hardness below its hardness, and will not be embedded in the grinding bowl.

Use mortars made of different materials according to the characteristics of the solid being ground and the thickness level of the product. Usually, ceramic or glass mortars are used for grinding hard solids. Iron mortars are used for grinding hard solids, while agate or alumina mortars are used for grinding less pharmaceuticals with great care. The basic principle of grinding is that the hardness of the object being ground is smaller than that of the grinding bowl. A better way to distinguish it is to take the object and scratch it on the mortar. If it can leave marks on the glass mortar, it must not be ground.

When performing grinding operations, the mortar should be placed on an object that is not easy to slide, and the pestle should be maintained in a vertical position. Large solid blocks can only be crushed before grinding, and cannot be directly crushed with a pestle, otherwise it will damage the mortar, pestle or splash the solid. Explosive substances can only be lightly crushed and cannot be ground. When grinding substances that are corrosive to the skin, a thick paper or plastic sheet should be placed on top of the mortar, followed by a hole in the center and a pestle inserted before grinding. The amount of solid in the mortar should not exceed one-third of its capacity.