GB/T 40277-2021
ActivePaper, board and pulps—Measurement of diffuse blue reflectance factor( ISO brightness)—Indoor daylight conditions
纸、纸板和纸浆 蓝光漫反射因数（ISO亮度）的测定 室内日光条件
Application Summary AI generated
This standard specifies the method for measuring the diffuse blue reflectance factor (ISO brightness) of paper, board, and pulps under indoor daylight conditions. It is applied in the pulp and paper industry for quality control and product specification, ensuring consistent brightness evaluation across manufacturing and testing laboratories. The standard is particularly relevant for assessing optical properties in white and near-white paper products.
Related Standards
GB/T 20810-2006
Bathroom Tissue (Including Bathroom Tissue Base Paper)
GB/Z 24987-2010
Paper, board and pulps - Estimation of uncertainty for test methods
GB/T 20216-2006
Determination of effective residual ink
GB/T 20811-2006
Waste paper recycled requirements
GB/T 7977-2007
Paper,board and pulps - Determination of conductivity of aqueous extracts
GB/T 1539-2007
Paperboard - Determination of bursting strength
GB/T 10339-2007
Testing method of light scattering and absorption coefficient for paper，board and pulps
GB/T 4687-2007
Paper, board, pulps and related terms - Vocabulary
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.