The glaze of bone porcelain cup is divided into overglaze color, in-glaze color and underglaze color, and only the overglaze color is unsafe.
The resolution method is very simple, the smooth surface of bone China, lead, cadmium dissolution is little or almost no, you can rest assured to buy; And should choose underglaze color product surface decoration pattern small products. Secondly, if you touch glazed bone China by hand, the surface of the product will have a concave and convex feeling, and the naked eye can see that it is not smooth, which belongs to the glaze color. In-glaze and underglaze ceramics touch the surface of the product by hand, smooth like glass, without concave and convex. Among them, most of the glaze color, underglaze color can be assured to buy; If the use of enamel bone China processing inferior pigments, it is easy to cause lead oxalate dissolve lead. If you buy a product that you don’t trust, you can soak it in vinegar for a few hours and discard it if you notice a significant change in color. In addition, the raw material soil fired with bone China has different minerals in the production ground, so the soil with high silica mercury content should not be fired.
When consumers choose glazed bone China cups, they should pay attention to whether the pattern color is bright. If it is not bright, the dissolution of lead and cadmium is usually high, and the safety of street bone China cups is difficult to guarantee, because it has no brand and production standards. If you can afford it, you should also opt for lead-free glazed “green” bone China cups that are more expensive than regular bone China cups, which are usually sold in supermarkets.
Post time: Oct-04-2023