With the help of advanced instruments and methods, Longshine strictly controls the quality of our products, in order to provide high-qualified and suitable pigments for our respected customers.

The quality control process consists of Coloristic Analysis and Chemical/Physical Analysis. Coloristic Analysis Properties include Transparency, Tinting Strength and Color data which compared with the valid standard of CIELAB (DA/DB/DC/DH/DL/DE). Chemical and Physical Analysis Properties are composed by various parts such as Iron Content, Iron Free Content, Volatile Substance at 105 ℃, Moisture, Water Soluble Substance, Sieve Residue, Oil Absorption, pH Value, Conductivity, Resistance and so on.

Conductivity

Iron Contect

Oil Absorption

pH Value

Water Solble Content

Longshine Pigments