Hardness: the surface Mohr hardness is 7. A simple detection method is to use iron sharp objects to observe the condition of damage points, and it is qualified if there is no scratch.
High-temperature resistance: it can withstand a high temperature of 300 degrees Celsius. It can be placed on the table with a stainless-steel container filled with boiling water, and it will not change color for 30 minutes. Or put a burning cigarette end on the quartz stone, and it will not change color.
Eco-friendly: provide green environmental protection certification detected by authoritative departments.
Flame retardant: 10mmx30mm quartz strip can’t burn on an open fire.
Acid and alkali resistance: etch the surface with 3% hydrochloric acid solution or 100g / L lemon solution, 30g / L sodium hydroxide, or strong potassium oxide solution, and there is no obvious visible change on the surface.
Water absorption: less than 0.02%. Sprinkle a little water on the quartz stone surface and observe whether the color is white after 24 hours.
Flexural strength: Standard Sn / t0308-1993
Compressive strength: Standard Sn / t0308-1993
Thermal expansion: Standard Sn / T17748-1999
Radioactive limit index (no radiation): the internal and external exposure index conform to bg6566-2001, and the detection result of king quartz is that the internal exposure index is 0.02 and the external exposure index is 0.03
Brightness: use a light meter to detect more than 60 degrees.
Appearance sense: clear without mixing, uniform color.