ISO 8112-1984 - 中外标准 - - 1984/11 - 现行
The absorbance of a 50 % aqueous caprolactam solution is spectrometrically measured at a wavelength of 390 nm and an optical path length of 50 mm. The result is expressed in Hazen units by multiplying the absorbance measured by a constant factor equal to 150. This factor is derived from measurements of absorbance of diluted standard solutions of platinum-cobalt scale.
测定哈森色数铂-钴标度工业产品试验已内酰胺己内酰胺分光光度测量分析分光光度法颜色CaprolactamColourDeterminationHazen colour numberIndustrial productsPlatinun-cobalt scalesSpectrophotometryTestingTests