| 标准编号 Standard/Code | 标准名称 Standard Title |
| TAPPI T 527 | Color of paper and paperboard (d/0, C/2) |
1.1 This method specifies a procedure for measuring the color of paper or paperboard with tristimulus filter colorimeters or spectrophotometers incorporating diffuse/0 geometry and CIE (International Commission on Illumination) illuminant C.
1.2 In the method, tristimulus values X (red), Y (green), and Z (blue), appropriate to the CIE-1931 (2)
standard observer, are calculated from reflectance measurements Rx, Ry, and Rz or from R () data. Color can then be
expressed in various color space systems:
1. Hunter L, a, b
2. CIE L*, a*, b*
3. L*, C*, h
4. Dominant wavelength, purity, luminosity
5. Color difference, [E, E*, E*94, E (CMC)]
1.3 Instruments equipped with microprocessors which give direct information relating to different color scale
systems conform to this method only if the means of measurements and calculation conform to the descriptions herein.
Test Requirement 测试要求：
颜色
Sample Size 样品数量 / 送样规格: 4pcs
Lead Time / TAT (Turn Around Time) 测试周期: 常规服务 Regular service 7-9 working days
Report Summary 报告摘要:
