Colloid mill

A stator for a colloid mill for reducing a particle size of particles suspended in a first liquid or a droplet size of a second liquid emulsified in a first liquid,

• the colloid mill having at least one rotor and at least one stator arranged coaxially one inside the other with the rotor arranged within the stator, the rotor having a rotor grinding surface facing or to be faced toward the stator, wherein
• the stator has a stator grinding surface to be faced toward the rotor, wherein
• the stator grinding surface has at least one grinding tooth with a shearing surface or shearing edge, the cross-sectional surface of which grinding tooth tapers, in a plane perpendicular to the axis of rotation, in the radial direction toward the opposite rotor grinding surface in the mounted state, wherein
• the cross-sectional surface has a second leg that is straight, which adjoins a base side running in the circumferential direction of the cross-sectional surface, points counter to the direction of rotation of the rotor in the mounted state, and encloses an angle of 85°-95° with the base side.