Posted On
ExperienceMaterials

How to determine the turbidity – in the coloring compounds

Posted By admin

Turbidity – clarity of pigments is measured by light refractive index (refractive index) and size of colored particles. 1) The refractive index of a substance is the ability to deflect light when light shines on it. For white, the higher the index of refraction and the closer the particle size to the optimal size, the […]

read more
Posted On
About Us

Traditional production methods of lead white flake

Posted By admin

I roughly translated this method as “vinegar & compost” (“stack” Dutch method). Lead leaves are placed on the bottom of terracotta pits with separate bottom compartments to contain vinegar (acetic acid) (about one-third flooded). The lead vessels are then submerged in horse manure and kept in a sealed house. Decomposed horse manure produces heat and […]

read more