3#-7# suitable for wall paint and tempera(scenery)
9#-11#suitable for wall paint and tempera (figure)
13#-15#suitable for making watercolors
The Fluorescent Girl from Brazil: Shanqu "pink tourmaline"
The difficulty in making pink tourmaline paint lies in the fact that the impurities in the raw materials have a "specific gravity" that is too close to that of the mineral, making it almost impossible to separate. Therefore, Shanq uses the "Nelson Centrifuge" (rented at a cost of 1.4 million yuan) in the production of this paint. Under the powerful centrifugal force, the "specific gravity" between the mineral and impurities is constantly widened, eventually separating them. After that, a 24,000 gauss magnetic separator is used to remove iron impurities and mica-like impurities with weak magnetic properties. During the grinding process of the mineral, Shanqu insists on not using any iron utensils to ensure that the paint has an unprecedented level of purity.
