How to see the quality of ceramic washbasin
Jul 21, 2021
Glaze finish and brightness
When purchasing, first of all, like the ordinary white ceramic basin, we must pay attention to the glaze finish and brightness. Good glaze finish and brightness are excellent, the color is pure, it is not easy to hang dirt and scale, it is easy to clean, and it is still bright as new after long-term use. When judging, you can choose to observe from the side of the ceramic from multiple angles under strong light. A good glaze should have no color spots, pinholes, sand holes and bubbles, and the surface is very smooth; Good and uniform reflection to light; You can also touch the surface gently with your hand, which is very flat and delicate. Another expert suggested that touching the back of the ceramic basin should have a slight sense of "rustle". When selecting, products of different brands can also be put together for comparative observation, so as to quickly judge the quality of the basin.
Water absorption index
The so-called water absorption is an index to judge the adsorption and permeability of ceramic products to water. It is understood that after water is sucked into ceramics, ceramics will expand to a certain extent, which is easy to crack the glaze on the ceramic surface due to expansion. It can be seen that the lower the water absorption, the better the quality of ceramic products. According to the relevant national water absorption standards, sanitary ceramics with water absorption less than 3% are high-grade ceramics.
Process, pattern and color
Most of the high-grade hand-painted basins adopt underglaze color ceramic technology, which is also the best ceramic technology at present. Therefore, pay attention to discrimination when purchasing, so as to prevent illegal dealers from passing off overglaze color as underglaze color and confusing fake with real. Underglaze decoration pays attention to meticulous freehand brushwork, which must be hand drawn, not printing and decals, and the color should be bright.
