There is a certain difference between the dry hiding power and the wet hiding power of coating products. For high-end products, the wet hiding power is generally better than the dry hiding power. For low-end products, it is the opposite. Just look at the feeling during construction, the key is to see the covering power of the paint film after drying.

The contrast ratio is an index used to evaluate the hiding ability of the product in the national standard. The specific operation is: prepare a 100-micron thick paint film on a standard polyester film or black and white checkerboard, and dry it under laboratory conditions for 24 hours. Put it on the black and white ceramic plates, and use a reflectance meter to measure the reflectance respectively. The ratio of the reflection data of the blackboard to the whiteboard is the contrast ratio. The stronger the covering power of the product, the smaller the difference between the data on the blackboard and the whiteboard, and the closer the ratio is to 1.0.

There is a certain difference between the dry hiding power and the wet hiding power of coating products. For high-end products, the wet hiding power is generally better than the dry hiding power. For low-end products, it is the opposite. Just look at the feeling during construction (the wet hiding power is good or bad), the key is to see the hiding power of the paint film after drying. The contrast ratio reflects the dry hiding power of the product and can reflect the final use effect of the coating.