CHINA NBC-5635 whiteness Tester, digital whiteness Tester paper, Spinning & weaving product whiteness Tester
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The test plane is ≥ 30mm, the thickness is less than or equal to 40mm, the diameter of the diffusing ball is 150mm, and the diameter of the test hole is 19mm. A light absorber is provided to eliminate the influence of the specular reflection of the sample.