The GB/T 40139-2021 standard specifies a material surface area Measuring method based on high Light spectrum imagery technology, which is suitable for the surface area measurement of food contact materials, jewelry and Miscellaneous materials. The method combines high Light spectrum imagery technology to detect the two-dimensional space and Light spectrum information of the target, so as to obtain high-resolution continuous narrow-band image data. The standard makes it clear that it is not suitable for porous materials with a pore diameter of less than 1 mm and materials containing strip-like textures with a diameter of less than 1 mm. With a structured light system, the method can accurately measure the three-dimensional structure of the material surface, providing comprehensive surface area data.
| Status | Active |
|---|---|
| CCS | (G31) 合成树脂、塑料基础标准与通用方法 | ICS | (71.040.50) 物理化学分析方法 |
| Release Date | 2021-05-21 00:00:00 | Implementation Date | 2021-09-01 00:00:00 |