GB/T 23770-2009 in English

《GB/T 23770-2009液体无机化工产品色度测定通用方法》由TC63（全国化学标准化技术委员会）归口，TC63SC1（全国化学标准化技术委员会无机化工分会）执行，主管部门为中国石油和化学工业联合会。
本标准规定了以铂�差鼙曜家何�标准色,用目视比色法测定色度的通用方法的术语和定义、方法提要、安全提示、一般规定、试剂、仪器、设备、分析步骤和结果判别。
本标准适用于色调接近铂�差鼙曜家旱某吻逋该鳌⑶成�液体无机化工产品色度的测定。利用本标准测定色度时,检测下限为4黑曾单位。

Scope

This standard specifies the terms and definitions, summary of the method, safety tips, general provisions, reagents, instruments, equipment, analysis steps and results of the general method for measuring chromaticity by visual colorimetry with lead-cobalt standard solution as the standard color judge. This standard applies to the determination of the chromaticity of clear, transparent, light-colored liquid inorganic chemical products whose hue is close to platinum-cobalt standard solution. When using this standard to measure chromaticity, the detection limit is 4 Hazen units.