About The Whiteness of Enamel

White enamel is very common in our daily life. For example, we can easily find white enamel cookware in a kitchen, and white enamel signs around street or white enamel wallboard in subway station.

White enamel must be coated as cover coat, it always need at least “two coat two firing”. To ensure the smooth enamel surface and perfect color.

To evaluate the quality of white enamel, whiteness is a very important aspect.

Whiteness of enamel is measured by the relative percentage of a standard white enameled template (magnesium oxide or barium sulfate). The whiteness of the enamel depends mainly on its opacifying properties, also by its hue, ie the whiteness of the enamel is related to its hue (referred to as whiteness measurement), that is, the hue of the standard template. If the hue of the standard template is yellowish white, the whiteness will be low for enamel template in bluish white, And for enamel template in yellowish white, the whiteness will be higher.


Hunan Noli Enamel Co., Ltd is the leader manufacturer of enamel frit in China. We can supply many types of white enamel frit. Differs from its whiteness and firing temperature. The whiteness of our super white frit (2200,2201,2202) can be at least 95%. And our Titanium white frit 222 with very low firing temperature, its whiteness can be 90%.