How to judge the material of quartz stone sink?

Observation appearance
Color and particles: The real quartz water tank is uniform in color, and the quartz particles are finely distributed and uniform. If you see obvious color difference, particle size or impurities, the material may not be pure. Such as high-quality white quartz stone sink, should be white and flawless, no yellow or gray spots.
Gloss: After a multi-channel polishing process, the quartz stone sink has a high surface gloss and looks bright and smooth. If the surface luster is dim and black, the production process may be poor or the material is faulty.
Transparency: Quartz stone has a certain light transmission, looking at the light, you can see that the quartz particles have a certain light transmission effect, if completely opaque, may not be pure quartz stone.
Check physical properties
Hardness test: The Mohs hardness of quartz stone can reach about 7.5, with steel nails or metal items with higher hardness in the inconspicuous part of the sink, such as no obvious scratches, indicating high hardness, the material may be quartz stone, but this method may damage the sink.
Weight assessment: Quartz stone density is large, the same size of the sink, quartz stone sink is heavier than the general material of the sink. For example, compared with the stainless steel sink, the quartz stone sink will feel significantly heavier.

Stain resistance test: drop a few drops of soy sauce, vinegar and other colored liquid on the surface of the sink, stay for a period of time after wiping, if it is easy to erase and no stain residue, indicating good stain resistance, may be high-quality quartz stone; On the other hand, if the stain penetrates or is difficult to erase, the material may have a problem.
Evaluate chemical properties
Corrosion resistance test: Drop a small amount of acidic substances such as white vinegar, lemon juice or alkaline substances such as baking soda water on the surface of the sink, observe for a period of time, such as no discoloration, corrosion, foaming and other phenomena, indicating good corrosion resistance, in line with the characteristics of quartz stone.
Burning test: Use a lighter or other fire source in the sink inconspicuous brief baking, quartz stone sink because of high quartz content, will not appear burning, smoke, emit pungent smell, if there may be counterfeit products, but this method may damage the sink, need to be used with caution.
View product certificates and brands
Quality inspection report: Requires the business to provide the quality inspection report of the quartz stone sink, to see whether the quartz stone content, physical properties, chemical properties and other indicators meet the standard. Such as quartz stone content should not be less than 93%.
Brand and reputation: Well-known brands usually pay attention to product quality and reputation, and the production process and material selection are more guaranteed. You can understand the brand reputation through network evaluation, friend recommendation, etc., choose a good reputation brand.