CAULYS Temperature Sensitive Paper, Temperature Indicating Sticker, 10Pcs/Set Surface Temperature Indicator, Thermochromic Label Sticker, Lab Research & Industry (5 Grids 480°F-554°F)

CAULYS Temperature Sensitive Paper, Temperature Indicating Sticker, 10Pcs/Set Surface Temperature Indicator, Thermochromic Label Sticker, Lab Research & Industry (5 Grids 480°F-554°F)

• There is a row of squares on the small sticker, representing different temperature values. When the temperature rises to this temperature point, the squares will turn black, and even if the temperature subsequently decreases, it will not return to the original color, so that we can know the higher temperature that the object has experienced, and we can know whether there is overheating without long time of monitoring, or use the test paper as a strong evidence of qualified quality